You probably have feelings for the same-sex, but this may also be a false positive
It could mean that he is gay. but it really depends on size if it is quite big than he may have just looked at it once accidently but then started comparing it to his own. Also he may just wander why you have a boner near him anyways. Hope this helps.
Erection
U can't get an boner
The prefix "fec" means relating to waste or excrement. It is often used in scientific terms related to feces or fecal matter.
If a boy says he has a boner because of you, he is letting you know that he finds you attractive and is turned on.
U can't get an boner
If he has a boner.
just because you get a boner when someone say's something doesn't mean that everyone else dose.
it means he has a raging boner
It means boner
RB means random boner
If by "bonner" you mean "boner" it means when a guy gets an erection.