I find her credible.
She has pictures & gave details that make sense.
I expect several witnesses to back her up.
Johnny is an addict, and the relationship was toxic, love-hate, pursue-distance, it was their dance-foreplay.
When she described falling in love with him I could feel the magic. Even today I think they have a chemistry.
Drugs & alcohol & maybe the age difference were the downfall.
Do something positive.