Ollie wrote:That does help.

Also, the significance of "safe?" "SAFE?," on top of Lisa's possible jealousy and all, may also having something to do with how it's a word
she's well acquainted with in regards to her own love life...A fact she may be secretly well aware of and self-conscious about.
Examples:
* She's big on celebrity crushes, and that "There's no crush as romantic as a hopeless crush" remark back at the switch game may have been a lot more sincere that it's context would suggest.
* When Aggie confronted her about having problems with Marshall and Darren, she dropped the snarker act and told her about what she didn't like about them and how Aggie deserved so much better. Make a very cynical spin of what Lisa felt was so bad about them, and it comes out as that they weren't perfect. Marshall's intimacy issues and Darren's being a spazz are hardly uncommon flaws to experience with boyfriends, but the disappointment seemed to bother Lisa.
* T.'s mentioned that off-panel, Lisa has been dating but never let anything get serious. Much earlier, he also said that she's pretty prone to keeping attention away from owning up to her own flaws.
* Lisa has shown she is one of the more perceptive characters, right up there with Penny and Jack, despite preferring to play the clown and smart-aleck sidekick. It would make sense that she would be well aware of how short of her fantasies real serious romantic relationship would fall...
* A while before the current arc, she personally witnessed Katy-Ann, in a way, make a romantic venture involving a six pack of expired beer (also note Lisa's reaction to being asked if she ever wondered that, deep down inside, she may not be as nice a person as on the surface) Now Aggie has topped that venture....