Answer:
1. Love-in (I'm sorry,not so sure about this. Or just use the noun 'love')
2. Contentment (?)
3. Companion (?)
1. loving
2. contented
3. accompany
I'm sorry if it's not true
a : she suffers from ulcer
b : James was shaking with laughter
c : I am here because of you
transmission
Explanation: