Lonely, he is never home

My live in boyfriend is a traveling tattoo artist and mostly works nights. At first this was fine... But there were times he was gone for two or three days at a time. Now instead he comes home for maybe 4 hours tops. He tells me he's gonna go tattoo and he proves that by sending pics of his finished work. He tells me he's on his way home, but he won't show up till 4 or 5 hours later. Sometimes not till the evening then comes home and takes a shower and goes again. I have tried talking to him. We have even fought about it a lot lately. He says it's only temporary. He always makes sure I have what I need and that I am ok. He's asked if it's ok to go and I tell him I would prefer him not to for the night. But he goes anyway. I never see him. He always makes sure to kiss me before he leaves, but the last few days he isn't responding to my texts, blaming it on his phone not working right. We haven't had sex in 2 weeks. He tells me I am smothering him. I just want a little of his time. He's always bring me home different stuff he's has gotten me. But when he is home, he is always messing with the car stereo or doing stuff around the house. There is never any us time. He promises he will spend a night at home but " something" always comes up. How do I get him to just be home once in a while. I know he loves me and I know he is not cheating for a fact. What should I do?