<human>: Summarize the given text in a few sentences.

My brother just moved back into the state and didn't have any more friends from high school really so he moved to the college town I live in and is getting help from our parents while he adjusts.

At first my friends really took to him well, always inviting him out with us, introducing him to new people. 

Basically, he won't stop lying. My friends are beginning to ask questions about the various lies he's been telling, no he didn't used to be a Scuba Instructor in Florida, no he didn't graduate from "really well respected" college (he failed every class and dropped after one semester), no he wasn't a roadie for "insert popular band".

It's beginning suck pretty bad. At first I didn't fully dismiss every claim he had when someone asked. I'd say "Well, I don't know, maybe he did whatever" Knowing full well he's just compulsively lying.

This is really starting to effect his image and people are beginning to catch on. The town isn't really that small but everybody kinda knows everybody and word gets around.

So, I got another, "Did your brother really do this thing?" text and I haven't responded, but I've decided to do something about it. Either I spill the beans and start telling the truth everytime someone comes to me with something, or I sit him down and explain to him what he's doing and that I know (He will vehemently deny this by the way), or I dont know. I'm gunna do something though. I really really need some advice, I appreciate all your comments.
<bot>: Brother lying, people are starting to catch on, I don't want him to be hated, what do I do?