What's the Name of That Book??? discussion

I don't remember a lot from this book and this might be from the whole series of just the fist book. I know a guy is ok undercover and he girl doesn't know. They get married for some reason, he didn't so he (or she) couldn't testify. He said they would see each other again, she ends up pregnant and alone for a while so he could finish up an op before they meet up again and they fall in love again.
I hope this is enough to go on for a tittle I hope to figure this out. Thanks in advance

I also know the girl was in witness protection and the guy was undercover with a gang (or mc) that had something to do with why she was in witness protection

Sex, Lies & Pearls by Kris Calvert?
Witness by Rachael Orman?

Kaycee, around what year did you read this book?

Is this a full-length novel or a novella?

Probably 2 years ago. It's a full length book, but I think it was a 2 book series.

It isn't either of those

Kaycee, are you still looking for this or did you find it?