Now, the real question is; will this affect your "relationship" with her parents?

I don’t use them myself just because of a previous relationship but Ball and Minor would be who I would go to.

@Jingwen DunfordNetworking and building relationships.

I'd suggest reading some books (The ones promoted by Bigger Pockets are excellent), and listening to a bunch of podcasts. 

I went through a horrible relationship and in my divorce, my creditt was shot to heck.

Excellent advice @Randy E., thank you.

In general it's not a good idea to mix business with close relationships.

@Kendall Short Excellent job!

I would suggest using local non-national banks they are eaisier to work with and you can establish a relationship just going to use them regularly instead of just poking in one day asking for what they have for you.

I'd have to have quite the relationship with the borrower.