Greetings pstraubie48, At first I wanted to jump right in and say Yes, of course but I know of too many people who've been through this and I've been on the brink of it myself. Love is a powerful tool, an action. With it much can get accomplished. From my experience loved ones start out with good intentions. However, caring for a terminally or just ill mate is both trying and difficult. It demands your full attention and dedication and even with the best intentions some lose the battle.
We must remember that life continues and has its own demands that you must meet with the full-time dedication to the sick mate. When my husband got sick for weeks, everything was on me, taking my grandson to school, granddaughter to daycare and son to work. Run to the hospital, oversee his care, stay until 3 p.m and do reverse pickups, cook dinner, do homework, run back to the hospital until visitor's hour were over. It took ALL that I had and knew to maintain my sanity and walk in love.
Finally, would I behave differently if a loved one was diagnosed with a terminal illness, yes! I'd try to live it with more grace, peace, compassion, and thought for others.