Masterbation

I recently started masterbating. It’s important to say I’ve been sexually active for 7 years now and have never tried exploring myself before. But after investing in a good toy, I’ve discovered I had never orgasmed before. I thought the feelings I’d been having was just it but there is so much more I was missing out on. Now sex with my long term partner doesn’t feel the same. It’s honestly anticlimactic. What do I do? I don’t want to offend my partner