I think you should 'nuke' the ones making the snide comments and should not just 'let it go'.
They are clearly saying it loud enough to dis you in front of the girl you are with.
As an example of the recommended 'nuke' to drop on them:
"If she [one that they say looks better] really was better looking than her [girl you are with now] , then I would be with her, but i'm not, so you can figure it out."
and walk off
If you deliver this right, the hamster wheel should melt.
They are clearly saying it loud enough to dis you in front of the girl you are with.
As an example of the recommended 'nuke' to drop on them:
"If she [one that they say looks better] really was better looking than her [girl you are with now] , then I would be with her, but i'm not, so you can figure it out."
and walk off
If you deliver this right, the hamster wheel should melt.