Kris Humphries Girlfriend Myla Sinanaj Likes her Coffee Black ....

Kris Humphries GF Myla Sinanaj is in a tight spot -- she's been dating a guy for 5 months who says he's single, trashing the in-laws of his estranged wife, and acting a little "Single White Female" by impersonating KK. Short story -- she needed a coffee break.

It's no surprise Myla was mum on her way out of a Starbucks in New Jersey this AM. Funny thing ... on the other end of the country Bruce Jenner -- whose face Myla calls "scary from too much plastic surgery" -- was at a Starbucks getting a java of his own.