Boyfriend problems! Pfa

Been with my man for 1 year and things are okay but the other day he pissed me right off. He was leaving to go climb Kilimanjaro and he hardly spent time with me before he left by spend time i mean 2 weeks of no days out just him stopping over coming in at 11pm and leaving at 7am! Then the day he was leaving he said “Bye Julie” to my mum who aint called Julie! His ex’s mum is called Julie! I was fuming!

He left and didnt speak to me all day while he was traveling to the airport. And when he got there i sent him a paragraph telling him im gonna miss him and he ignored it and said he cant be arsed he is away.

Im worrying that he may cheat even tho he says he never will but what lad would not be turned if some fit girl came onto him!

Anyway just wanting to know how you would all feel, or if its just me letting my mind run wild and seeing things way over the top?