Lonely closeted bi male .....met a guy....is he?

[sansan1]

So I met this guy in a business situation. I'm a 65 bi closeted bi male. All I know about him is he's 67 and lives with his mother.
He seems nice, we met as new business neighbors, and have interacted a bit concerning business. I'm thinking about him, and
'having thoughts' about him. Guess I'm attracted to him. This is new to me, being closeted, I mostly fantasize. Wondering
how to proceed, what signs to look for that he might be 'into' guys....or me?  What sort of conversation could I dare initiate
with him that could turn to into playful innuendo's, which might reveal his orientation? I don't believe he has a lady friend, which
increases my hopes.  Any insight or comments much appreciated.