<human>: I have been friends with Jess for 3 years, and Adam for 1.5. I introduced them to one another at a party, and they started dating around a year ago. 

Background: Adam is a really friendly guy. The kind of guy where ten minutes into a conversation you feel like you've been friends for years. On top of that, he's always been pretty handsy, with both girls and guys. He'll rest a hand on your shoulder, or go in for a lingering hug, or nudge your knee to get your attention. 

The problem: Now that he's in a relationship, Adam hasn't toned down his behaviour at all. I don't expect him to walk around in a bubble, but I find the following behaviours inappropriate:

1. He has long one on one lunches with female friends 
2. He indulges girls that clearly have a crush on him (e.g. Letting them put flowers in his hair, etc)
3. When we study together he'll lean our arms together or his knee against mine until I move away. 
4. He often comments on pretty girls we see in the street. 

When Jess is present he doesn't do 1-3. 4, she seems perfectly comfortable with. I don't know r/relationships, it just seems kind of dodgy to me. Should I bring 1-3 up with Jess? Or do you think it's a case of Adam just enjoying the attention and I should leave it? I guess I feel a bit responsible since I introduced them...what do you think?

Summarize the given text in a few sentences.
<bot>: introduced two friends, they're dating. Guy is kind of passively flirty with other girls. Disrespectful? Should I tell her?