The person is texting me and my friends, including my Significant Other harassing us about "lies" and "infidelity." It's non stop and we believe the person is using an alias, if not, then they are stalking us.

I get those too sometimes but then I realize my boyfriend is totally imaginary, then I wonder what I should really be worrying about.

For me it isn't a question of whether or not I've cheated you, it's a question of cheating a dream. It's my dream though, and that makes it real. However, with regards to your actions, I have no sympathy, I'm just flat out jealous and insecure.

Dock the "I've."