Lube, lube, lube, and more lube. Dryness can lead to irritation, tearing, and pain. Make sure you’re getting a good, high quality water-based lubricant (not silicone-based). And, if you can’t talk about it, maybe communication is part of of problem too. Make sex talk fun. Make it about her. The last thing ANYONE wants is to feel hounded for sex when they’re embarrassed or not feeling good. Feeling sexy, wanted, desirable, etc. goes a long way.