Jenelle Evans and Courtland Rogers: MARRIED!

Jenelle Evans and Courtland Rogers didn't waste any time.

Evans' big sis Ashleigh Evans Wilson revealed the surprise nuptials Tuesday, just three months after they began dating and just two weeks after Rogers proposed.

The Teen Mom 2 star is a marred woman ... goodness.

The news came as a surprise to more than just celebrity gossip readers.

"My mother was totally shocked and had to hear it from someone else," says Wilson. "Our whole family is shocked because they have not been dating very long."

"I'm sure she did this to distract from all the drug accusations that have been flying around and of course she thinks it will help her get custody of Jace back from mom if she is married."

"After all that she has been through, she should know better than this."

In May, Jenelle Evans broke off her brief engagement to Gary Head, and at that point briefly reunited with another ex, the oft-imprisoned Kieffer Delp.

Evans began dating Courtland Rogers, also a single parent, in September.

Friends of the MTV star are wary of Evans' battle with sobriety - she claims it's been seven months, despite what we're watching on Teen Mom 2 - and of her bad boy beau.

Rogers spent four months in jail for larceny in 2011, and in 2006 as well.

"Courtland is bad news," a friend says. "He takes advantage of everyone."

Another source says Rogers isn't the stand-up guy the medical assisting student thinks he,- and that his motivation to wed Jenelle Evans may not be so pure:

"He sees Jenelle as a meal ticket. That's why he wants her around."

If that's true ... scrappiest, most erratic meal ticket ever.

Jenelle and Courtland: How long will it last?