Search Results: problem with boyfriend''s parents

My fiance and I have been together for 3 years. We also has live together for more than 2 years.

Recently, he has a met this guy from work at his previous job. The first time that I met this dude, he was drinking and driving. He just don't seem like he has a good head on his shoulders. He comes across as someone lazy, irresponsible, and immature. You can tell this guy at a point in his life has went down the wrong path. You can also tell his family is well off and he is the only kid in the family who fell in a ditch.

They've only known each other for around 3 months. My fiance really likes to hang out with him. They don't work with each other anymore but, they see each other every week. This guy used to come over to our house every day until I complained to my fiance that it's too much. Now, he comes over around once a week and my fiance goes to his house once a week. My fiance asks him to chill at least 3 times a week but then his buddy was not available. Honestly, I can tell this guy don't really like my boyfriend that much. I have mentioned to him that there is something not quite right about this dude. The funny thing was, my fiance agrees that there is something off but not sure what. He really likes to talk, watch games, drink, and smoke weed with him. He did tell me that it's really just someone to chill with. I really don't think so. Ever since he met this guy, my fiance has lost some focus from work. He would rather be an hour late for work in order to chill with this dude. I am definitely not happy about that. Another thing is, this dude is single, lives under his parents roof, and has no commitment to anyone or anything.

What can I do about this?