Being close with Keith, means you had told him everything. Everytime something happened, the first person you would tell was him.

When you got your current boyfriend, you told him everything. All the good things. Which there weren't many. Your boyfriend would always nag you for the littlest things.

"You're giving others the wrong idea", "You look like a whore", "Are you trying to dress like a slut?"

You never mentioned them. But he could tell you weren't being honest about it.