Hmmm...I didn't get a chance to go to the meet-up, but from what everyone said, you're wonderful, so I don't think it's that you're not "putting yourself out there". Perhaps the other female is just one of those partners that likes getting ALL the attention and can do without giving any? If that's the case, no wonder you're feeling a little insecure. I know during my first couple experiences I had serious concentration issues and I just wasn't able to reciprocate because it was like I'd been blasted onto another plan of reality and I was just floating there feelin' fine. I'm not sure how involved with females MrsVan is, but does this lady reciprocate with her?
Asking them was probably a good idea. This way it will let you know whether you want to continue with this couple or move on. I've said it before, and I'll say it again, it's SO hard to get 4 people to agree on something. Good luck!