Hey rainbow.... dont take my opinions to heart this is just my experience with guys and doesn't necessarily mean all guys....how much easier would it be though ok i think a guy should put his gf first, but shouldn't necessarily dump his friends all the time to hang out with her or visa versa. ok there needs to be a balance so u dont get sick of each other or distant because of the amount of time you spend 2gether. guys need guy time as they need to relax. guys act different around their friends and their girlfriends and their parents. we all do it...different interactions enables us different perspectives. ok its pretty easy to pick up on guys signals if a guy is into you. you've probably already picked up on these signals. they flirt, playfully pay you out or ignore u totally sometimes if they're shy, tell you private things when you hardly know them, go out of their way for you, you may also often catch them looking at you as well when they think your not looking...so on and so on. theres lots of different things but they're some that i come accross usually. ok i usually give them three if i think they really deserve it and its not a big problem or it is genuinely hard for them to fix. otherwise its one- if they cant fix it after one chance and really bugs you then they are going to keeps doing it. ok going for your bf best mate is a definite no no, you will get labelled in the group and often they never work out any way. so do not date or get with this guy. ok lastly if your bf a major flirt i say you talk to him, tell him if he says he wants to be with you then he should act like it and shouldn't be hanging off other girls. obviously if your friends noticed it as well, you shouldn't let it slide. not only is it disrespectful to you, it shows he is probably only using you. what does he introduce you as to these other girls??? ok well hope this helped and good luck