Married & LDS sex

I ADORE my husband of 8 yrs and he’s the BEST MAN in the world! #lucky

My problem is so stupid and I feel it’s so selfish. We’re both active LDS/Mormon and sex is not something that he’s ridiculously experienced in and it gets cold and boring. That’s one issue. Second is that I’ve been unfaithful before and although I got to the root of that and realized the reasons why, I still feel neglected sexually and sometimes bored. My love is afraid whenever I want to try something new, gets all nervous and thinks I went back to my antics. I am horrible at initiating sex and get all nervous and rather not. Point is, my sex drive has been low and I feel bad for him and want to keep him happy and feeling needed. Please help me. I don’t know what to do. I don’t want to scare him lol. At this point of our ever after we have 2 silly kids, we both work and only Sundays off plus he works afternoons and is home at 2 am. I feel so overwhelmed.