This opens the door to problems... Will people see this side of you and talk? Will you flashing your tits, impressive or not, get back to your partner .. either being talked about or pictures and if so what are the consequences?Unfortunately I think I would if I was ....... That's why I haven't been drinking without him. I don't like that side of me.
Additionally will the guy you blew and fucked want more, or tells his girlfriend?
If you fear loosing what you have you will need to consider the what ifs.. stopping getting wasted without him is a start, but if you slip being in a compromising position can lead to walking away alone, getting pregnant and the possibility of std which you could give to the person you love...
No judgement just suggesting becareful and accept your decision to leave it behind or enjoy more .
Also different countries have varying cultural acceptances so not sure if you live in a more Liberal region.