Yes, several times in the past my SO invited guys over. Some wound up spending the night but sleeping in another bed. I was so attracted to one particular that I slipped in the bedroom and slid my hand under the cover and copped a feel. Wouldn't you know I touched the wrong one? LOL. The next morning I realized that during the night they had changed bed positions. One of them evidentally got up to take a leak and the other one slid over.
The one I did feel had a nice bulge under his shorts but not the one I really wanted to check out. If he ever knew I did it, he did not let on and I never went as far as pulling his shorts down or anything. They both worked where my SO did at the time and I was afraid. Curious? YES!