i haven't heard from them so i'll give you what details i have.
they have been friends for about five years because that is how long he has been in portland. one night one of them broke up with their significant other and the other came over to comfort. comfort led to kissing then they had sex without really thinking about it. it could have been a one time thing or sort of a reoccurring thing when one of them was sad. either way, their son wasn't planned and they were never in a relationship. i think right now they are just figuring things out as they go. no custody agreement but they usually have that part down. he's a private trainer, so sometimes he is up at four and all that fun stuff. i think they still have fun but the sex part has stopped because the exhaustion AND weirdness have sort of set in.
for him, he would have freaked out when she was pregnant because of his father's history with women. we could figure out if she knew all that before or couldn't figure out why this sweet (don't call him sweet), goofy guy was that torn up about the situation. it would be pretty out of his normal character. he would have gotten over it but there would have been some drama.