'Teen Mom 2' first look: Jenelle Evans, Nathan Griffith don't know why mother Barbara is suspicious of him

teen-mom-2-exclusive-nathan.jpg Jenelle Evans is happy with the new guy in her life. So why doesn't her mother Barbara feel the same way about Nathan Griffith?

In this exclusive clip from Tuesday (March 11) night's all-new episode of "Teen Mom 2," Jenelle and Nathan wonder why Barbara is so "suspicious" of him when he's done nothing wrong so far. Jenelle even runs down her roster of exes, comparing Nathan to each one, and suggests that Nathan is just "too good to be true."

Watch the Zap2it exclusive clip below. "Teen Mom 2" airs Tuesdays at 10 p.m. ET on MTV.

Photo/Video credit: MTV