Sometimes the loves our lives don't love us back.
I'd say that ship has sailed. He's moving on, you need to too. It's going to hurt and you're going to feel alone and like there's no one else on the planet who will ever make you feel like he did. You will listen and nod your head when someone tells you there's plenty of fish in the sea. But you won't believe them. Not yet anyway. You'll brood and feel depressed. But then one day, to quote Swingers (an excellent break-up movie - watch it):
Mike: How did you get over it? I mean, how long did it take?
Rob: Sometimes it still hurts. You know how it is, man. It's like, you wake up every day and it hurts a little bit less, and then you wake up one day and it doesn't hurt at all. And the funny thing is, is that, this is kinda wierd, but it's like, it's like you almost miss that pain.
Mike: You miss the pain?
Rob: Yeah, for the same reason that you missed her... because you lived with it for so long.
If in the email he talks about getting back together after telling you he's planning on getting serious with another chick, run, don't walk from the dude. If he wants to keep something on the side with you and have her, then he's a douche. Don't fall for it. If he really just wants to talk, then
listen to him; set aside your own agenda and your own hurt and really hear what he has to say. And reread what you just said:
a 3 year on and off relationship
It hasn't been stable - ever. What's the saying? Insanity is doing the same thing over and over again and expecting different results. You've been getting the same results every time, what makes you think it's going to be different now?
our lives just seemed to be heading in such different directions
That's not a bad thing. We're not always meant to be with our first true love. Sometimes, our hearts need a roughening up and bruising so we can discover that our first love was true and sweet but broken, not as fulfilling as we had originally thought.
wonder if he was up for another relationship we then had a steamy evening in his car
He was more than happy to have a "steamy evening" with you before laying our whether you were in a relationship yet. Just say no to ex sex.
we started to drift a bit again
Because you like the idea of the relationship but you're two different people now.
He seems hesitant
Girl. He's not into you.
he's seeing another girl
Was he seeing her when you two hooked up? You say he said it isn't anything serious yet, but still, you're being played.
Move on. He's done. He's your past, not you present or future. Lick your wounds and then go about your life. There *are* other fish in the sea you know.