This seems a bit odd and may be part of the issue. Putting that aside...
You say you're athletic...join forums that pertain to your interests and get involved with local groups. I race bicycles (road and mountain) and I have met a ton of people that share the same interest...guys and girls. I can literally ride with a group every day of the week. It's easy to get to know people with similar interests and because it's a group activity people aren't as guarded.
Car type activities are typically a sausage fest and the girls that are around are usually just supporting their partner.
Oh, and don't try so hard...
2008 E88--Fuel-It! Stage 3 LPFP & PI--Pure Stage 2 turbos--JB4/MHD--FBO--580whp
2011 E90--Fuel-It! Stage 2 LPFP and PI--Pure Stage 2 Turbo--JB4/Flash--FBO--Currently 540whp/570wtq
2013 Mini JCW--Tune--DP--FMIC--a couple Fuel-It! goodies--265whp/320wtq
2015 F82--JB4--513whp/558wtq. Much more to come!