Lust asks what you can get. Love asks who she is.

Quick answer: Lust looks at a girl and asks what you can get. Love looks at a person and asks what she needs. Noticing someone isn't the sin. What you do with the second look is where it's decided.

Noticing isn't the sin

Somewhere around thirteen, your brain starts noticing girls in a way it didn't at eleven. A lot of Christian guys figure that means something is wrong with them. Nothing is.

God designed you to be drawn toward people. That wiring is part of the plan for marriage and family down the road. A flicker of "she's interesting" or "she's funny, I'd like to know her" is just a guy being a guy.

Lust is something else. It's when noticing turns into taking: you keep looking, you keep wanting, and the person in front of you slowly turns into something to look at. Same eyes, different direction.

So stop carrying shame for being wired like a normal teenager. Spend that energy on the part you can actually steer.

The one question that sorts it out

When you catch yourself thinking about a girl, ask this: Am I seeing a person or a thing?

A person has a name, a bad day, a little brother she's annoyed at, a favorite song, and a family who'd be furious if somebody treated her carelessly. A thing has none of that. A thing just sits there while you use it.

Paul gave Timothy a rule for treating people in the church that works at school too. Treat "younger women as sisters, in all purity" (1 Timothy 5:2, ESV). You wouldn't size up your sister. You'd stick up for her. That's the standard.

Try this: can you say three true things about the girl you can't stop thinking about, and none of them involve how she looks? If you can't, you don't know her yet. What you're feeling is probably less than you think it is.

The second look is the whole fight

The first glance happens on its own. You didn't choose it, so don't beat yourself up over it.

The second look is a decision. That's where Jesus put his finger in the Sermon on the Mount: "everyone who looks at a woman with lustful intent has already committed adultery with her in his heart" (Matthew 5:28, ESV). He's talking about the look that stays, the one you're feeding on purpose.

The fix is boring on purpose:

• Look away on the second beat. Make it a habit, like checking your mirrors.
• Change what's in front of your eyes. Look at your shoes, your tray, the guy next to you.
• Pray a one-line prayer if you want one. David's works: "Turn my eyes from looking at worthless things; and give me life in your ways" (Psalm 119:37, ESV).

You'll fail at this some days. Self-control is a muscle, and it's built the same way as any other: reps, and getting back up. If you want more on that, read The guy who blows up isn't the one in control. Same skill, different fight.

What love looks like when it's real

Paul's famous description of love is a list of things that cost you something. "Love is patient and kind; love does not envy or boast; it is not arrogant or rude. It does not insist on its own way" (1 Corinthians 13:4-5, ESV).

Read that last part again. Doesn't insist on its own way. Lust always insists on its own way. Love can wait.

In a teenage guy's real life, that looks like:

• You treat the girls in your grade the same way you'd want a guy to treat your sister.
• You say hello to the quiet girl without it meaning anything.
• You take "no," "not interested," and "stop" the first time, with no sulking and no arguing.
• You don't pressure anyone, ever, for anything. Nobody owes you attention, a conversation, or anything physical. Not for any reason.
• You want the girl's parents to be able to look at you and relax.

Philippians 2:3-4 (ESV) covers the whole attitude: "in humility count others more significant than yourselves. Let each of you look not only to his own interests, but also to the interests of others."

Your table and your phone

Most of this fight is lost in two places.

The lunch table. A girl walks past, and somebody says something. Maybe it's a comment on how she looks, maybe a rating, maybe a laugh that says everything. Everybody's waiting to see whether you'll join in.

You've got three options: laugh, go quiet, or change the subject. Changing the subject costs you about four seconds of awkwardness. "Did anybody finish the history reading?" works fine. Better still, say "Come on, man, that's somebody's sister." You may take some heat. You'll also be the guy the other guys quietly respect, and the girls in your grade will notice who never joins in. Standing Firm at School Starts With Where You Sit is about this exact moment.

Your phone. It will put things in front of you that you didn't ask for, and sometimes things you did. Don't fight that with willpower alone. Charge it outside your bedroom at night. Use it in the kitchen or living room, not behind a closed door. Ask your dad or another trusted man to help you set up filters on your devices. That isn't an admission that you're weak. It's the same reason a wise guy wears a seatbelt.

Paul told Timothy to "flee youthful passions and pursue righteousness, faith, love, and peace, along with those who call on the Lord from a pure heart" (2 Timothy 2:22, ESV). Notice the verb. Flee. He didn't say stand there and wrestle it. And notice the last part: do it along with other guys. Nobody wins this one alone.

When you lose a round

Some of you reading this have already crossed a line you wish you hadn't. Maybe you looked at something on a screen you shouldn't have. Maybe your thoughts have been a mess for months.

You're not ruined, and you're not the only one. Almost every guy at your youth group has fought some version of this.

"If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness" (1 John 1:9, ESV). That promise is for you, today, including after the tenth time.

Then tell someone. Pick a parent, your pastor, or your youth leader, whoever you trust most. It'll feel like jumping off a diving board. Once you've said it out loud, the secret loses most of its grip. You won't be in trouble for being honest, and any adult worth trusting has heard it before. If you've never been to a youth group, read up on what actually happens at one, because it's a good place to find a mentor.

If shame ever turns into feeling hopeless, like things won't get better or you'd be better off gone, tell an adult right away. You can also call or text 988, the Suicide and Crisis Lifeline, any hour, for free.

Keep your heart, and let the rest wait

"Keep your heart with all vigilance, for from it flow the springs of life" (Proverbs 4:23, ESV).

Waiting isn't weakness, and it isn't a punishment. It's you deciding that the girl you eventually marry, whoever she is, deserves a man who was building character while he waited. It also means your own parents get a say. Bring them in early. If a girl matters to you, her parents and yours should both know her name.

Be that guy now. Build the habits at fifteen so that at twenty-five you're already the man she'd be glad to meet.