New Years Cheating / Disrespect

On New Years my boyfriend was giving too much attention o my best friend and I ignored him

I even caught him staring her down

Or walking by his self with her but I ignored it because it was New Years

I gave him attitude because he would converse with her and sit next to her but try to stay away from me

I did tell him that night that it bothered how they were and to not snake me or do me wrong ya know. Cuss I’m not gonna act clueless to his bull shit

Anyways that same night I brung him upstairs to sleep

We started having sex and he has the nerve to ask for a three some

I said I wanted one before but I changed my mind

He the. Says “ go grab one of your girls down stairs .. what’s her name .. “ best friend”

And asked multiple times

I’m so turned off y’all like I feel so insecure beceause my friend is pretty ya know .. and I guess I’m not enough like I can’t stop feeling insecure.

Idk what to do .. like I asked for one before so I guess I shouldn’t get mad ? But I changed my mind and he knew that and that’s my bestie so I should cut him off? Idk how to feel about this I need hell