Invite her to the gym with you

You could workout together! It's casual enough where she won't think it's a date but also works as a test run of how a date might go. Plus you can show off how manly you are. No way this backfires in any way. Fool-proof.

You text Tori and invite her to workout with you this afternoon. You know she needs to study but you tell her it'll only be an hour tops. She agrees and you set up a time to pick her up.

The ride to the gym goes smoothly. You have her laughing and telling stories. It's a real cute moment. You don't want it to end, but of course it does.

You and Tori enter the gym and see who else but Derek there working out. Well, at least you see him. Tori, much to your relief, doesn't seem to notice him. You take advantage of this and go as far away from him as possible while still being inside the building.

You and Tori actually have a great time together working out. You're pretty evenly matched cardio-wise, and a lot of the machines are pretty easy to use. You almost forget about Derek, but knowing he's there too still drives you crazy. Every 10 minutes or so you find yourself scanning the room for him. He is spending most of his time with the weights. You see women walking by him do double takes as his rippling muscles strain and flex while lifting huge weights. At first you scoff but it gives you an idea. If you could lift weights in front of Tori, maybe she'd get turned on by you. Worth a try.

You and Tori make your way over to the bench press. You act casual as you stack 2 20-pound plates on each side of the bar. You should be able to lift that.

"Wow, Adam, that's a little ambitious. Are you sure about this?" Tori asks concerned.

"I'll be fine, trust me," you tell her.