I just got dumped by a guy I truly care about and he claims to still love me too yet he dumped me for another girl. Why would he dump a girl he says he loves for a girl he only likes?

Cause he doesn't know what love is.

Why would he say it if he wasn't sure?

Guys say things they have no idea what they are talking about. And girls listen and they also don't know what the guy is talking about.
To you what does love mean between a guy and a girl??

I don't know how to define it. I can only feel it for him. But would it hurt this much to see him with her if it wasn't love?

Yes. It hurts, GET OVER IT. Cause obviously he doesn't love you.
He MOVED ON. So you do the same. Or its going to hurt more an more, and you're just going to keep hurting yourself.

Take it from me, did the same damn thing! And I messed up big time by not moving on like I was supposed to.

Yes it hurts, he does not really love you, or he would not be leaving you, something you have to learn and this is the hard lesson, men lie ( as do women) but first they lie to get into bed with you, and then they lie when they are breaking up to try and make you feel better ( or their idea of it.) and sometimes they try and leave a door open in case the next adventure does not work out, or some where to come back for an occasional sex if they get the chance

He's lying.. obviously love doesn't equαl hooking up with someone else

Bottom line , move on.

i just got dumped by a guy i truely care about and he claims to still love me too yet he dumped me for another girl. why would he dump a girl he says he loves for a girl he only likes?
I was in the same sittuation with the same guy like 3 times. If Im right what's happing is that he's saying that he still loves you is because when he's done with the other girl and can go back with you.So basically he might be using you as his second wheel.So therefore my advice would be If he comes back to you don't let him.nobody deserves to be the second wheel

Look, alls it is, is you. What do you really want, deep down inside? Look in the mirror and ask yourself. Then answer.

There's your answer, now when you know what you want,

DO WHAT YOU KNOW IS RIGHT.