True intentions?

I’ve been talking to a guy at work. We are both married and not happy. We both have kids so it’s messy. We haven’t done anything yet just been talking and flirting for weeks. There is a lot of sexual tension. I am not sure his true intentions just sex or is he looking for a relationship. He has hinted both ways. Said stuff about our future but said that he wants to go there with me right away. Deep down I know I want the relationship I think and I’m invested in this guy. There’s feelings. At some point I asked him what his end goal was. He said he wasn’t following and I said serious or not serious and he said semi serious. What the heck does that mean?
True intentions?
Post Opinion