Can falling in love be avoided even when you know you must NOT!

Do you think falling in love can be controlled?
Is there anyone who can claim that you had forbade yourself from it?
Because you are married or anything else?

I am talking adult people, not puppy love. Not youngsters with no strings attached. People with grown up children with no warm understanding marital relationships. ‘Living a lie’ showing up at the family gatherings and having nothing to talk about, tired but for tons of reason (including relatives, financial, love for kids etc.)
Who all of a sudden found ‘that one’ and can’t shake it off for years…

Have anyone can shed the light? Thanks