Love vs fear of being alone

My boyfriend & I have been together for 2 years and have worked together for 5 years. I can honestly say that I love him with every ounce of my being, but I'm not sure he's even attracted to me anymore. He is amazing with my children, teenagers are not always enjoyable, but he is still always there for them. He never misses their games, school performances, or even practices if he can help it. He works long days and spends 3 to 4 nights a week at my house. He always does the yard work, services the vehicles, cooks, cleans..... he does everything so perfect! He treats my kids, parents, siblings as if they were his own family. His family is in Hawaii and he

He only sees his family every 5 years so I think he really enjoys how welcoming all my family has been. But the problem is that he never compliments me, there's no romance or passion, and we only have sex about once every 6 weeks! I'm starting to feel as though he is only with me for my family and not for me.