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

I strongly disapprove of all the shit men get when they're around children by themselves like the rest of Reddit, but my roommate is no child. She's a sweet and pretty girl with big eyes, big boobs, and wavy hair. She is somewhat naive about the world and the people around her, but she thinks her male mentor's intentions are pure. 

He's single and in his late 40's. He's had years of experience mentoring college students in my roommate's concentration. The students in said concentration are mostly female, so he mostly has mentored females. But this guy brings my roommate food and DVD's on occasion (driving all the way to our apartment) just cuz, drove up a couple of hours to meet her parents who were concerned about the situation, and talks to her on the phone about way more than just his profession/her studies. (It's always him who goes off topic and talks about the other aspects of their lives, so he's the one initiating it, not her.) It seems to me like he acts like a bit of a boyfriend (or someone who's trying to be), but then again, I've never had a mentor, let alone a male mentor. How worried should I be, if at all? 

I've casually asked her before, after the mentor drove to our apartment a few times, "Is he this close with all his mentees?" She responded, "I don't think he's working as closely with any of his other mentees" and thought nothing more of it.
<bot>: Single male mentor spending more time and effort with my roommate than I expect. Is this normal or should I be worried and talk to her about it?