WTF?!

I'm beginning to think that T is not going to go away easily. I told him that I was seeing someone( I sort of was at the time) so he'd back off. Yet, he keeps emailing me. He has messaged me three times today. I told him I was leaving the lab and said gn. As in, don't message me again for the rest of the night. It's damn near two in the morning and he emails me asking what I'm doing. I guess he sees me in blogger chat and what's even weirder is he never writes in the chat. Always an email. What the hell do I do? I'm starting to dread having to see him in Bio tomorrow. This is my message if I ever end up missing in the days to follow.