How do you think i should interpret this apology?

The fact he said that after ten years tells me that you must mean something to him.
He might be testing the waters to see if you are still out there or if he can come back.
Ten years ago:
It was possible he was scared of commitment and now that he has sown wild oats and seen it was a fruitless endeavor, he might be willing to try and make it right with you. Might even be willing, if you are, of course, to make that commitment with you.
See where it goes. At the very least, you will get to learn about what he's been up to for the past ten years.

why wouldnt it be sincere if he hasnt seen you in ten years? he would hav nothing to gain

I would take it as a sincere apology. Maybe the poor fella felt so badly about moving out of country, and having your relationship drift slowly into the "SUNSET" that he could not mustard up the courage to apologise to you, and maybe felt a tad embarrassed, and did not know at the time what he had done until he thought about it and said to himself "OH HOLY SHIT" what have I done and had good second thoughts and really wanted to make amends with you. Remember, nobody is perfect, we all make "BOO-BOOS" and if you still like him at all you would accept his apology and corresspond to one another at a regular basis and find out what went hay wire betwixt the two of you and then wipe the slate clean and start and establish a new closer friendship. :D

sounds like he's just admitting he was wrong, but nothing more if he didnt ask you to contact him back.

Sounds sincere to me. over the years, people mature and really appreciate the best times of life. as you mention he has a child on the way, thinking responsibly if you two get to be together or something, the only affected could be that beautiful creature that is on the way, well that's my point of view. hope this helps...cheer up. =)

It sounds sincere, but it also sounds safe. If I was that sorry I think I would say a bit more.

Thanks. We (collectively) don't fuck around. Well, maybe sometimes. But not on this.

By reading your post, I feel like it was sincere. But, like others have already said, only you will truly know for sure.

So many people are quick to JUDGE!! People demand to know why he sent it - because it's not possible that the guy just meant what he wrote - he must have an ulterior motive?? ...bunch of half-whits!!

The dude probably meant every word. He was probably planning on leaving the country before he met you - or had a visa that was expiring - or something, but he really came to like you - and was unable to fully explain himself. Perhaps he was military?

Any guy that drops life-changing plans in order to pursue a love interest is a FOOL. Romantic, perhaps, but certainly a fool. Any girl that expects it is an even bigger fool. So, it sounds like you both accepted what had to be done at the time. I'm 100% confident that his apology is sincere. If you still have feelings and are able, you should absolutely see what might be. I promise you that a TRUE love or friend is not lessened by distance, nor time apart.

He was probably up late at night, drunk, trolling the internet....that doesn't mean it couldn't have been at least partly sincere. People tend to do out of the blue stuff like this when they're bored, up late and drunk. Also, possibly combine tis with perhaps something happening in his life recently, like a break-up or a dried up love life or even a religious or scary experience.

I know it sounds negative, I'm just giving you the answer that came to me first. I could be completely wrong, it's just soemthing worth considering IMO.

Wow. I am enjoying all these good answers. Thank you all. :)

it sounds like one of those moments where the guy had his priorities above you but now that they've run dry, he's going back to you as a rebound to any girls/troubles/shit he's gotten himself into. men are scum, i know because i am one. :D