Ok so I have ran into a problem that I have never run into before, and that is sexual duration. I've had about 6 or 7 I believe this is number 7 for sexual partners and I've never had a problem lasting, even with the ones that I didn't use condoms with (trusted partners on bc) i was still able to last a good amount of time with.
Well now I have this new partner and we have recently started having sex (with condoms) and she has to be the tightest girl I have ran into by far. Now she's like 4'11 so she is quite short but keep in mind I am fairly small guy at 5'4. She's so tight it took me a good amount of time to wiggle my middle finger inside of her even when she was soaking wet and it got to a point where I couldn't get it any farther I got it maybe half way to three quarters of the way in. My finger are tiny too, I'm talking size small glove with my fingers maybe being a little more than half an inch wide.
Now comes my problem. The first night we had sex I lasted like a minute and was completely shocked and embarrassed and ive been trying to avoid having sex with her since. I gave her some excuse like "il feel better about having sex when your bc kicks in" which it will in like 4 more days, and she accepted that.
At this point I don't know what to do, I'm worried this will happen every single time and I don't want to disappoint her. I also don't want to hurt her feelings, she asked me last night when I spent the night "why won't you have sex with me" and I assured her itmwas me and had nothing to do with her but I don't think she believes that. I feel like we have a good connection, we talk a lot and hang out a lot. We have a lot of fun together, I just don't want it to get ruined over this situation, do I be honest with her and tell her why i really am nervous to have sex with her or do I sit in my room all day playing with myself to try to build a longer duration (partially joking) but seriously......what do I do?