am i being a b1tch for doing this? Options

[m&m]

>< ok ok . i broke it. lasted 3 months and a bit. i broke it once. i made up. he broke it once. he made up. i broke it yesterday and im pretii sure im not gona make up. i broke it for a number of reasons. but there was no way i was gona tell him that particular reason. ok. i told him this --> "its not the same anymore. we've both changed. it's not .. how wen i first liked you." >< that was tru. but the other reason was.. he was starting to hang out with this other chick .. a bit more often than normal. u c, he dusnt care. he has no idea wat im thinking. he was the one hu told me he went out with her. like he blogged. and in the recent blogs its like "i went out with "her" 2dai." i read her blog too. and they were similar. im definitley not jealous. i mean i coodnt care less. if they want to go out fine. but im not going b his lil friend who he can hold hands and hug for the rest of the day.
i duno wat im thinking. i think im being really selfish to think that. i mean he has friends. i cant b like "u cant go out with her".
but i do kinda feel .. half pissed or annoyed sumhow. i still duno y i find my self apologising and feeling guilty for breaking it.
but how wood u guys feel.. if ur bf/gf started going out wif another guy/chick a few too many times a week. and all their blogs are abt are each other.