Dilemma Nr.3: There is sexual tension between me and maid of honour

So in my earlier post I was quiet indecisive as to who to make my maid of honour.
Last night, I met up with my close friends for drinks and they noticed the ring on my finger and I revealed my engagement. And I confessed that I wasn't too sure on how to pick. ( after a few glasses of wine, things can get a bit more honest) I then said to Tanja that I would like to make her my maid of honour but I understand that she is too busy. And she was like " hell no, il make the time for it , I would be more than honored etc.." she also seemed to be abit hurt, that I thought she would be overwhelmed and not want to really be involved. As I said in the earlier post, she isn't a romantic and she doesn't care too much about marriage etc.. But seeing how happy she looked when I announced it. She appeared to be the happiest, i automatically asked wether she'd like to be my maid of honour.
And she was over the moon and hugged me several times.
On my way back home, my anxiety over this crept back in. Isnt it too contradictory to make Someone my maid of honour , who I've had a lesbian fling with. It wasn't something hardcore, but we kissed after one glass to many and many years have passed since we got that close but sometimes I would feel the tension, especially when she would tell me that she'd like another go and "flirt" with me. Because she always dated men, and currently is dating a guy I never took those things too seriously. I have never felt any sexual tension towards any other female before or after our experience. That's why I also have brushed this off as a one time, drunken thing. Plus we have managed to be in eachothers company multiple times without tension..
But now I'm thinking that our past may cause a problem. We haven't been meeting very often recently but now that the wedding plans are underway, we surely will be seeing eachother more often, and I'm afraid that the elephant in the room will be bigger than it already is. I don't think I can revert the decision, without it causing damage to our friendship. We have not ever talked about it properly and I'm thinking maybe somethings are better left unsaid, but on the other hand I would like to know how she sees it. But that would bring things up, after being buried for so long. I don't even know what I want to achieve. What should I do?