I do sort of know how you feel, Jilly.
I share my educational interests with a few males, with whom I am (or was) quite friendly ~ but I very rarely spend time with them, and could never just ring them up and ask them if they would like to attend a meeting with me ~ even though my own husband has suggested it. Indeed, I haven't even seen these men in a few years.
Other males, with whom I have also been friendly, I don't see at all, any more. We may exchange family Christmas cards, but that's all.
It really is quite sad, but it simply isn't the done thing.
"The secret of success is constancy to purpose" - Benjamin Disraeli.