Cats!

Me and my boyfriend have 2 cats now. They're not kittens but not full grown. They're both girls, and that get along fine.  The second one we took from my boyfriends cousin who didn't want her. The thing is, she had a ton of fleas. We gave her a bath, and it killed pretty much all of them. I've been looking for about an hour and have seen about 4 or so on her. I'm afraid my other cat who was already here for months will become infested because of the new cat now.. Is she safe to sleep in bed with me and my boyfriend, and my other cat? I'm afraid of becoming infested. We plan on getting flea medicine and a flea collar for her, like my other one has.