Bob was a jealous guy, especially when drunk. You were his partner so he would obviously get annoyed by anyone talking to you.

He saw that you were speaking to someone he didn't know. That just made him more mad. He hiffs before stumbling over to you. "Hey, babe?? WHO iS tHis guY?! Is He BOtherinG yOu???" He almost headbutted you while leaning over you.