<human>: Hi all 

Been dating my GF for around 6 months everything is going pretty cool except she booked a Eurotrip with her best gal pal abou 6 months before we met. It has been really unpleasant while she's been gone (drunk calls, tacky group tour photos, putting other guys on the phone when she talks, just a complete change in her personality) I have told her multiple times that I feel uncomfortable when she tells me guys hit on her / everyone is having sex / that her ex messaged her etc etc. like everyone I speak to about this think she's doing some pretty weird shit.

Cut to the chase this abscense has actually highlighted how different we are (things she has gone and seen vs. what I'd do, wanted to to drugs because they are cool and she never did them before, just like she's got a huge list of things to do so she can say she has done them, which is fine)

My plan is to see how she is for about a week when she returns and she if she reverts to her old self (she became quite bitter before she left) otherwise I might cool it off. She's my first GF so I don't think there's much point dragging it on if I'm unhappy

My big question is before she left we would often have unprotected sex (on pill) now I want to trust her but logic tells me I should wrap my meat upon return, how do I go about this without accusing her of cheating? Like if she blows me I can't turn around and be like oh I got a yeast infection or some bullshit, maybe the old numbing condom? I just see it ending really poorly. 

Appreciate any tips!

Can you condense the text into a few key points?
<bot>: monogamous GF went on a Eurotrip, how to I integrate a condom back into our sex life without it coming across like I don't trust her?