Should I be concerned?

Okay, so this might be rather lengthy, but I would really like an input from you ladies!! My boyfriend is 18 and is at the beach for a week with a couple of his guy friends. Which I am completely fine with because we works 12+ hour shifts in the summer and all day after school when schools starts and deserves a break. But throughout the week, he has been barely texting me, which I know he is out with his guys just having fun so I'm not too worried about that. But anyways, I was on the phone the other night with him and he told me to hold on and I said okay not questioning anything because that's notmal😂 like.. My mom does that sometimes Yano? 😂 but I heard a lighter in the background and he knows how I feel about him smoking. It's a really big turn off and just really unattractive to me. And the fact that he promised me he wouldn't smoke again. So I asked if he was smoking and he was at least honest and told me he was. But then on the 4th of July he was drunk and told me that he had been texting this girl for his buddy that they all met at the beach trying to hook him up. Which I found very strange. You're friend is old enough to flirt by himself. He doesn't need your help. And I wouldn't be concerned but a few months ago he told me that he went to the beach when he was dating his ex and him and his friend got in the car with these two "hot girls" but he was "just being a wingman" and when his friend asked in the car "don't you had a girlfriend?" He said yes and the girls took them home and he was mad. Why were you mad if you weren't gonna do anything? Why were thou mad if you were just hooking HIM up? I don't know. He's been short texting me while there too. I feel like I'm over reacting. Should I be concerned?