So I met this older guy (maybe 20-25 yrs older) at the gym while waiting to play pickleball and he was super friendly and talkative and we played a few games together. I saw him a couple times after and he would always come up and say hi and make lots of conversation. I told him I have a boyfriend and he didn’t seem to change his friendliness. I also saw he would get so nervous when we talked like he would drop things or his hands were trembling a little. He definitely is a little bit dorky but super nice. He owns an investment firm, he’s never been married, no kids. The last time I saw him we exchanged numbers because I told him I was learning tennis and he offered to help me with my serve. He offered to buy me a racket, and get lunch after which I didn’t go. Then he was saying he wants to take more vacations and ask where I like to go, what family I have, what are my hours like? But he knows I have a boyfriend, maybe he thinks it’s not that serious? Is he trying to be my SD?