She has issues. Stay away.
Any girl who randomly picks a guy out while sober and starts making out with him despite the fact that he hasn't showered in days is clearly going to cause trouble. Plus, the fact that you sensed something odd about her means that she is probably batshit insane. Plus, she clearly isn't the worlds most faithful person.
Just tell her to GTFO somehow.
Edit: And as for the advice that you're supposed to fuck up at this time of your life. True, but this chick sounds like the type that will cause the fuck up to be massive, you want the kind that when you fuck it up it kind of all just goes away reasonably tidily.








