Watch this week’s sneak peek for Monday’s episode of How I Met Your Mother, “Bad Crazy,” in which we get to know more about Ted’s “last mistake” before we meet the mother.

In How I Met Your Mother‘s sneak peek for “Bad Crazy,” Ted admits to the gang that his new girlfriend, Jeanette (played by Abby Elliot) is crazy. Watch the sneak peek below. (Unfortunately, this content is currently unavailable outside the US.)

So by crazy, he means she’s a super scary stalker who has been following his every move since he appeared in New York Magazine. We’re definitely getting “psycho” vibes from her!

What is worse, though, is that even Barney is telling Ted to cut Jeanette loose, and you know if Barney thinks she’s got to go, then something really is wrong with her. Also, it sounds as though Barney has had some pretty dark experiences with the obsessive type…

A brief synopsis of the upcoming episode 8×16 “Bad Crazy” has also been revealed.

Ted is reluctant to break up with his crazy girlfriend Jeanette. Meanwhile, Robin becomes attached to Marvin after finally holding him for the first time.

So Ted’s strange girlfriend aside, from the sounds of things, Robin could be second-guessing her original stance as a no child zone. Do you think she might be about to change her mind with regards to having children? And how will she and Barney get around her fertility issues if she does?

How I Met Your Mother 8×16 “Bad Crazy” airs Monday at 8/7c on CBS.