My relationship is only 8 years old, but I'm going to respond anyway...cause it's the internet and 8 is close enough to 10 for me to feel like it's worth it
Life can get in the way, plus we don't live together so that makes it difficult, but it's at minimum once a week, often 2 to 4 times. All depends what's going on that week.
Of course, we're in our mid-20's and you're in your 40's. I don't think that should make too much of a difference though. Just gotta find ways to keep it fresh.