<human>: My girlfriend is the nicest person you would ever meet, she also seems to inadvertently lead on many, many guys.... Guys flirting with her over text has been a major issue (even as she claim she NEVER flirts back).

Regardless she went out with a friend the other night, a little background he is a foreign exchange student  and has some very popular 3rd world disease that everyone has, she is a germ a phobe... so them messing around didn't seem an issue. 

What pissed me off is that their hangout started at midnight... she tried to play it off of how he as not contacted her and PROBABLY not going out, as I could hear her do her makeup over the phone. She did the ill call you right back and almost hour later hear back from her, saying they going out. 

Last I heard from her till mid afternoon, did not get a "I got home safe" or "Im home now" "where I slept, what we did etc" 

Finally I get the "have not heard from you today are you ok"  Then I get a series of questions of what I did last night, what I did in the morning , and what I did in the afternoon. 

Oddly enough that day I was envited to a huge family party, mentioned this, and was too busy to get into the details (taste of what I went through).  Thats the last we spoke...

This are shitty stupid games, any idea of how to handle this as an adult?

Can you condense the text into a few key points?
<bot>: Girlfriend pulled an all night hang out with a neutral friend, no communication with me, So I did the same.. how to handle like an adult?