tostrong-

girls who are happy and have bfs that they love still talk to and flirt with other guys, especially in a college setting where theyre constantly striving to get to know new people. so i wouldnt worry about it too much. and also like somebody itt already said if youre doing all the right things (i.e., being fun, being a challenge, fucking her well, etc.) then youve probably got nothing to worry about.

having said that, though, the above post is pretty worrisome. youre coming across as pretty needy and insecure. if you start acting scared around her and getting all worried about losing her then its only going to be a matter of time before it happens.

so my advice would be to 1. stop worrying about what shes doing and saying to him. 2. dont ever bring him up to her again or ask her about him in any way. 3. continue to be fun, be a challenge, and be attractive to your gf. and 4. start making some new female friends yourself. but not just in a reactionary 'you-did-it-so-i-can-too' kinda way but just to better yourself and continue to build your social circle. a lot of guys stop doing that when they get a gf. then they get out of the relationship and realize they really have no cool female friends to hang out/hook up with.

given the Facebook conversations, I would say your GF is not compliant.

as long as that stays the same, stop worrying. the dude is definitely hitting on her. but he seems a newbie who just found out the pickup line "your BF should have no say in who you hang out with" and is eager to try it on anything that walks and has a hole.
do not raise his value by becoming jealous. as long as your chick is not complying to his meet-up requests, she could be telling him almost anything, including "I have a sick pet piranha at home". even nothing is an acceptable answer. as you probably know, girls love to talk themselves out of nasty situations by not saying anything (it's the "I texted - she did not text back" problem so many guys have on here). so, no worrying. if she fancied the guy, she would definitely talk back to him, ask questions, and keep the chat going. and eventually meet up with him.

BTW, hats off to the super-alpha guy. once I reach that stage of confidence I will be too old to tell people about it.

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nice guys don't get laid
"It's disrespectful not to bang them when they sleepover." (Hellhound)