My boyfriend said he is bored. Should I be worried?

Anonymous
Last night we were laying in bed and my boyfriend told me he has been bored lately. I asked him what he was bored with and he said "I don't know, work, life. We haven't been doing much lately." It made my heart sink when he said this because we broke up for awhile at one point and he had also said this before everything fell apart but then we decided to work things out. We live together and he is in the military and I go to school full time. I also have a 4 year old son that lives with us. I asked him if he was bored of me and he said no. I asked him what I could do so he doesn't feel that way and he said he doesn't know. I suggested some things we can do together and he said "maybe, well see." I personally feel we have been pretty active, we went to a ball for his work a few weeks ago and went out and had fun. I got a new dirt bike we have been working on together so I can go riding with him. He also doesn't have very many friends, so he never really does much with them, he's usually at home sitting in his chair on the internet, I'm at home a lot too because of school and my son. I just don't want to lose him again, last time this happened he went and started confiding in an old friend of his who is a girl and had an emotional affair, and I don't want things to fall apart again, what can I do?
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Oh and also I told him I loved him and he said he loves me and he started cuddling me and we got intimate. Then we fell asleep in each other's arms, so I feel confused, maybe he's just bored with life?
My boyfriend said he is bored. Should I be worried?
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