You are never too old to fall in love. Having said that, at age 76 (which I am, too), the pool of available people with whom to fall in love diminishes.
My mom was 88 and very healthy, driving and going to the gym three times a week, but she had a massive stroke, spent 11 days in a coma, and that was that. Mercifully quick.
Healthy and active up until the end. That really is a blessing. We hope mom will enjoy pain-free mobility for quite a while. She is flourishing where she is now living.