I think it’s very possible.

Activity groups are great especially for many people who get anxiety because the focus is on the activity not themselves, this could be one way of meeting people and possibly friendships could develop.

I would talk with your partner about his jealousy issues, the root is likely not you but within him. I empathise, my husband can be jealous too (although not of women friends) but he has in time become less fearful. We did talk it over a lot though and investigated his fears. I do think it’s important to tackle this issue because it might subconsciously be holding you back from socialising because you fear triggering his jealous reaction.