Striking a balance between friends and romance is difficult especially when you find yourself getting along with members of the opposite sex.
My advice would be to join a local club that reflects your interests – a book club, hiking, sports, discussion groups, etc. And don’t be afraid to let people know why you joined which makes for a great opportunity to say explicitly, “I’m definitely not here to pick-up or get picked-up.”
Once other members hear that, they know where you stand and how to approach you.
It may take some time before you find a group that meets regularly and with whom you click, but hopefully within a few weeks, you’ll make a connection with at least one or two people that will foster into a friendship beyond the group’s organized meetings. If you don’t find one right away, don’t be discouraged. Just remain open to saying “Yes! I’ll try that!”
Best of luck and I hope your social circle grows exponentially! 🙂