Why is he getting with a girl so unlike what he likes, literally days after breaking up with me!?

It's called being on the rebound. She gets laid, he gets over you. It's pretty much a win/win for all parties except you.

Another possibility is that he has such a distain for you and the drama/bullsh*t you were bringing into the relationship that he wants to try something new. Good news if this is the case is that he will come back to you if he absolutely hates this new girl.

My guess is that he got lonely immediately following breaking up with you, and ran to the first girl with open arms. Furthermore, he's made you jealous as hell, which is a plus for him. Sometimes guys will do that: date women immediately following a breakup to teach the girl a lesson.

Then again, he may just no longer be interested... there's really no way to tell at this point. Keep in contact with him and if he ignores you, go on a date or two with another man. Fire back.

People can become emotionally detached from a relationship before the actual end of it. Maybe that last 3/4 weeks he decided that this particular relationship wasn't what he wanted, so he had emotionally come to that realization. People go through these emotional phases at different times, and at different speeds. Maybe he's just in a different place. at this point, it's tough to say, but coming to terms with seeing them is going to be all on you, if he's already over your prior relationship.

IF HE CANT HANDLE YOU AT YOUR WORST HE SURE AS HELL DOESNT DESERVE YOU AT YOUR BEST!
give it up he played you
chances are he never honestly loved you
if he did he would have seen you were having
trouble a tried to help
my boyfriend was very supportive through
the time period my mother went through chemo
and I was a total b***h

maybe he just wanted companionship without all the responsibility of a relationship...since he's having issues right now he just probably wanted someone who he didn't have to care too much about.

I think he is trying to make you jealous. or maybe you think you are better then her. get your head screwed on right

It could be that he was cheating on you with this new girl and she may have been cheating on her bf. Or it could be rebound, either way it doubt it'll last.

it might be rebound or he thinks there's something that she has that attracts him. maybe he's using her to get over you, which would be very mean indeed...but that's his choice now.

Generally, when someone starts seeing someone else right after a break up they are rebounding. So don't focus on it, and put it out of your mind. He may be trying to upset you, or he may just be trying to find comfort in someone else. It most likely won't last so don't dwell on it. Focus on moving on and try to stay out of contact with him until you feel better about the whole situation.

I hate to say it, but he probably is just young and missed the "dating" life. He might have thought you guys were getting too serious...

Same thing happened to me when I was in high school. I was dating a guy for a year, and we were in love, when HE broke up with me over family problems, and I thought I'd just stick by him and be supportive as a friend, well he stopped answering my calls, etc. and I couldn't figure out why, then one of his guy friends told me I just needed to leave him/the relationship alone. When asked why, he said the same thing...the guy was dating some girl from his school who had a baby and stuff (totally not the type of girl he'd normally date)...

Sometimes it just happens...it's hard to deal with I know, but it's just when guys are young, they don't know what they want, and they're always questioning what they "could have"...or what else is out there