Occasionally when I go to group rides, some guy will race to get ahead of me at the start of the ride. Often I will end up passing him and staying ahead for the rest of the ride. I don't make a point to pass him, I am just faster. If he catches up and passes me, not a problem with me.
There was this one guy that I remember tho, he started the ride just that way, racing to get on the trail before I did. Sure enough, I pass him & keep ahead. But at every stop & re-group, he pushes ahead of me - only to have me pass him on the trail a few minutes later. After the third time of pushing past me, I did make a point to get right up on his back wheel for a ways and made him fight to keep ahead before I passed him again. Snarky, but fun.