should my boyfriend hanging out and being close to his ex-girlfriend concern me?

i have been dating this guy for about 3 months now and everything is going really well. it is kind of tough right now because he goes to school 2 hours away from me, so we are only able to see each other on the weekends and during holidays/breaks. when we first got together, he told me he is still in contact with his ex-girlfriend (who also happens to go to the same school) and they are good friends- they had dated on/off for about 2 years. he recently told me that he hangs out with her and she comes over his apartment to eat and chill, just them. this made me uncomfortable because i know i would never invite an ex-boyfriend over to my place to hang out, just the two of us, even if i have maintained a good friendship with them. i don't mind if he hangs out with her in a group, but alone just seems so...close and intimate. i don't want to be high school about it and tell him i don't like him hanging out with his ex that way. am i being unreasonable? or am i at least a little justified in feeling uncomfortable in this situation?
By bewildered86 9 years ago :: Dating
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