<human>: Could you distill the essence of the text into 1-3 sentences?

We haven't been a couple for months due to fidelity issues. While we were having a mild argument about it, he yells out about being abused by his former boyfriend. It's a long story involving a breakdown and tumultuous communication, but now that I've finally *began* to move past being cheated on in such an awful way, I'm beginning to process what happened to him as I've learned more since we have talked a few times.

He went to find a new therapist, doesn't want to talk to her about it anymore. Is leaving school and I guess I'm just worried about him. It's hard being the only one who knows. What's a good way to bring up this issue that I've never asked him about but he seems to only talk to me about? It's a hard burden to carry. I'm thinking of waiting until school is out for him and then contacting him to see if we can talk about it.

Any thoughts are appreciated. Thanks.
<bot>: Former SO was sexually abused. I'm the only one who knows. How do I encourage him properly with out overwhelming him. Should I?