kinda in a weird situation with this girl
so i just recently graduated high school and there's around two months for my uni to start. recently this girl texted me and told me she's had a crush on me since 11th grade, apparently i was her hallway crush for like 3yrs lol (same school). we start talking and i wanna date her.
the problem is, her ex is dating my cousin (hes a guy). her ex cheated on her for my cousin, and i didn't even know anything about this because i don't talk to my cousin at all. my cousin apparently talked a lot of shit about this girl and tried to defame her everywhere for being a lesbian (i live in a conservative place so it becomes a big deal). this girl told me that my cousin is also apparently very weird, sleeps around, cheats on a lot of girls and does a whole bunch of bs i wasnt even aware of (and he's just 17).
he is also kinda manipulative and his mom has some beef with my family and tries to sabotage us a lot. what i'm worried about is if i date this girl, my cousin will find out somehow and try to ruin my life over me being gay or something (im not out to my family yet). on the other hand im wondering if i should just shoot my shot w the girl im talking to because im moving out in two months anyway.
i dont know if this is stupid and im just overthinking it or if its like a valid concern.