Just As Some Background, I'm A Senior In High School And I'm On The Cross Country Team. My Brother's

Just as some background, I'm a senior in high school and I'm on the cross country team. My brother's friends live relatively close to me and him so we end up carpooling to and from practice (although with school, it's more carpooling from practice). Our one idiot friend's dad sometimes gets us from practice. Now, this guy annoys me. When we had practice in the summer, he'd occasionally take us there and when he did, he'd get us there late. Anyway, homecoming is coming up and a couple days ago, the dad was talking us home from practice and he was talking to all of us and he's saying something like, "I know this guy and he has some girls that I can set you guys up with as dates for homecoming". Now, I'm gay. However, I'm not admitting that to everyone in the car (there were four of us kids and besides me, everyone is a junior). And the LAST person I'm telling my secret to is this kid's dad. And he started talking to me for a bit, saying "@cadawan, you're not saying anything. You up for a date?" and I was caught off guard so I just go "Hm? Oh...uh, nah". I was sitting in the very back of his car, btw. And I know that he isn't really gonna set us up with dates but istg if he actually did I'd be friggin pissed. That would just be really awkward for me and I'm sure whoever the girls is, she wouldn't like me. I wouldn't want her asking me something like "What's wrong? Do you not like me or something?". Like, what do I say to that?

"Sorry darling, girls just don't do it for me"?

"Sorry, I prefer dudes"?

"Sorry, I'm gay, tho"?

Like, that's all I can think of saying.

Side note, there's actually this cute boy on the cross country team that I totally have a crush on and I'm pretty sure he's gay too but I dunno know if he has a bf and I'm too chicken shit to ask. I personally wouldn't go with a date to homecoming but if he asked me, I wouldn't be able to refuse. He is SUCH a sweet kid and I feel really awkward about fantasizing about kissing him but I can't help it. He is legit the only reason I like going to practice.