I just want to throw up

Today, started off great. I went down to The Dunes, and have my old job back with them for the next 9 weeks. Two jobs starting next week. It'll only be 8 weeks of misery, I can do it. I need the extra money. They were so happy to have me back, which of course, I was super surprised about. I didn't really leave on the best of terms.  There was a lot of backbiting that went on. Sigh.  Part of me can't believe that I'm going back. But, I know it, I'm good at it, and it's only 8 weeks.
I went over to the family's house and talked to them for awhile- saw my littlest brothers' girlfriend who just got into town. That was fun, but I decided I needed a day to rest. So I went on an adventure. I took the trail back in nags head woods to the sound and laid there. Did a little writing. Got a little sun. Listened to the waves lap the shore, the birds chirp in the trees, bull frogs croak, and the wind rustle through the grasses.
Then I got a phone call. He heard from his exwife. She is under the impression that the child she recently had is his. He doesn't believe that he is the father, but that doesn't make the confusion less. He's mostly over her, but not quite.
Personally, everything I've been told about her, I know she's a terrible person.  I hope she gets better, but I don't want her to hurt him anymore. I don't want her to get under his skin. The power she still has to get him worked up. She hurts him and there's nothing I can do.
He told me today that I hurt him once, unintentionally with the things I said.  It was a conversation I had with my mother about him, talking about how smart he is. I said not math or words, but like practical things, he can build anything out of nothing. But his dream is to be a singer/songwriter and he writes songs all the time, so he picked up on the "not words" part. I didn't mean that he wasn't good with words, he is. He talks way better that I do.  I have trouble communicating sometimes, but he doesn't. I admire him for that so much. All I meant was that he's really good at building and creating things. But his reality heard the negative and it actually made him unable to write for a month. My words did that. It kills me.