the present

someone it going to have to explain this to me. why on earth would a guy with a girlfriend get another girl a Xmas present? ok, i know he got his flatmate gifts but she lost her mother last year and he knew she was going to feel depressed and that's just a nice thing to do. but other than that? to be fair, i don't actually know what he's got me other than it's tiny, cos he forgot it at home (another country) but why even tell me? again i wouldn't be too happy about my boyfriend getting other girls presents, no matter how small. and we did settle this issue of him having a girlfriend and that this attraction between us wouldn't go anywhere - not that this has really stopped him... but seriously, am i being weird and obtuse here or is he being a total cad?