Before I met my husband, I had a boyfriend for whom I could give oral and swallow with no problems. It never bothered me, and I liked how much it made him enjoy himself.

I tried that with my husband all of once! Something about his semen just tasted so horrible I gagged like crazy and very nearly threw up on him. Not very romantic. He's tried changing his diet, even eating fruit exclusively for a few days ahead of time, but it still just tastes so horrible that I can't stand it.

For a long time, if I was giving hubby oral to completion, he'd just tap me on the shoulder and I'd pull back, and he could cum into a wad of tissue. This worked well, for a while, till he told me that it felt un-romantic, and it was bothering him. I still can't stand the taste of it though, so I figured out a few compromises.

1. If I know I have time for a shower afterword, I get him just next to cumming and then let him cum on my breasts
2. If there isn't time for a shower, I get him really close, then I put the tip of my tounge against the roof of my mouth, sortof making a barrier. I can still suck on the tip, and use my hand on the shaft, but when he cums it doesn't get up in my mouth, and because it's only touching the bottom part of my tounge I can't taste it. It does end up making a bit of a mess, usually all over my chin and dripping back down on to him, but whatever - it makes him happy, and I don't have to taste it, so it's a win win.

I hope you both are able to work out some compromises. You both deserve to have your fantasies indulged.