Is It Me?

Is it me?  I don't think I've done anything different.  I certainly haven't been dressing differently.  I've noticed a lot more guys eye f*cking me and saying hello (mostly on the street and grocery stores).  This could be because:

1. It's been hot out, like really hot for SF (mid high 70s) and people are nicer when it's warm out or
2. I am just noticing other people passing me by