I do this too. Like you, I don't feel I have full on Tourettes, but it feels like it when these words blurt out like that.

For me, it happens when I'm overwhelmed. I don't know if it's related to bipolar, or just some odd trait I have. I say "I love you" a lot when it happens.

Sending you hugs. I know how awkward this can be. (((HUGS)))