Guys, How often is too often to be ditched before I should walk?

Anonymous
My boyfriend and I have made plans for many things and suddenly something better comes up and I will just get a oh I’m going to do this instead text. Most recently he has plans to go on two trips which will have him out of town for 3 weekends. We had plans with a couple (of course my friends) to go to a concert: last night he dropped the bomb of I’m not going I am going to go camping. He told me I would be mad about this and knew it. Never once was this a private conversation as I was told in front of other people. This same friend will be in town for 2 weeks that he is going camping with. So now we are at 5 straight weekends of zero time together and he saw nothing wrong with yet again picking his friends over me. What should be my breaking point? Should he have said to his friends I already have plans I can not go camping?
Guys, How often is too often to be ditched before I should walk?
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