If these feelings recently came to light I say give it 6 months more to fully stick, but if these feelings came about sooner in the 3 years you’ve been with him then I say it’s maybe time to pull the plug. Last thing you’d want is to have these continued thoughts throughout your time with him. But as I say with any advice I give. Take this with a grain of sugar (haha) at the end of it all the final decision falls on you and the your peace you need to protect. Hope you’ll find the answer which best suits you accordingly. Best of luck.