Huge huge humungous boy drama?

ok, well i was going out with this guy i liked since 1st graqde named jake. and he liked me 2. so we went out. we really like each other, and B4 we started dating he dumped vanesa. and so. i broke up with him like 2 month's later because he was too shy around me and we made a promise to go back out if we talked more and we could just be better friends. so, exactly 2 days later vanesa (x-gf) asked HIM out through fone adn he said yes!! she didnt want me to be mad at her, but how could i not? i loved him a lot. and they are soo ucky together cuz they hold hands and snuggle with me right there and she wants me to feel jealoce. i have no idea what to do. should i just go on, not caring or should i do something about it and tell vanesa how i really felt when she did that crap to me? sorry if this isnt a big question and i sound like a total idiot, but i just want to see what u guys might of did in the past (is this every happened to you) and if u got in the right d.