Search Results: hook up with someone else

the other night my friend and girlfriend were in the room together playing games and watching tv (i was in the living room working on my essay) the door was open and our walls are hollow and i could hear everything they were saying. so they conversate and get to know each other and are laughing a lot while playoing the game. my girl came in two or three time to see how i was doing and she kissed my every now and then. the conversation they had went from the game to their personal lives and their interest. i walked in at one point and the convo dropped almost immediately. my friend even talked her into getting a game system and they discussed movies they wanted to see and that they should hang out again. but as it went on he mentioned he had an interest for latinas and they added each other on social media (not facebook or twitter) and as they looked at each others profiles my girlfriend mentioned a few girls on his account and he said he was interested in a few of them. then she started to give him advice on what to do and then i chimed in aswell. after i was finished with my work she came in again and said my firned was pretty cool. then hugged and kissed me and wanted to look at my hw.
now im not sure if im just stressed and over thinking things but i kinda felt like they were being a bit flirty. another friend (lets call him friend B) walked past the room looking at them and he had a weird look on his face.
however their is also info to go against this. that same night my friend texted me that i should marry this girl and i asked him why and he said that i probably found the one. he also told me not to hook up with a girl (before i was dating my current gf) because it could ruin what we could have had (me and my current gf) also my girlfriend fears that i will leave her for someone else (she thinks she isn't good enough) all of this seems a bit ironic and im not sure what to do with the whole situation. im tired, stressed about school and i just need help. ugh... please comment on how to deal with this.