Sam Asghari’s ex-girlfriend Mayra Veronica has declared he’s a “fantastic husband” for Britney Spears. The pop star tied the knot with the model/actor on June 9 after five years together and now Sam’s former lover has given her blessing to union – insisting he is a “devoted and supportive” partner. Singer/actress Mayra told TMZ.com: “I think Sam would be a fantastic husband … he’s not like the cheating type or the flirting type. He’s very devoted, very supportive … so I only see good things for them to be honest with you. He’s the type that he’s going to concentrate on his work. She looks …