Miguel and girlfriend Nazanin Mandi are reportedly engaged and ''really excited'' to get married. The Simple Things singer has been dating model Nazanin for the past 10 years, and are rumoured to have taken the next step in their relationship. After Nazanin posted a selfie on Monday morning showing a large diamond on her ring finger, sources have confirmed the engagement. An insider told E! Online: ''Nazanin and Miguel are really excited to get married! They've been together for some time and knew that they were going to spend their lives together. ''All of their friends and family think they are the best couple and really complement each other.'' According to the sources, Miguel's proposal was ''done perfectly'' and was ''very heartfelt and real''. And the singer is apparently hoping to use his vocal talents to serenade his wife-to-be on their wedding day. The source added: ''Miguel will definitely be singing his soon-to-be wife a tune when their wedding takes place.'' Miguel previously spoke about his reasons for not proposing to Nazanin before in their courtship. He told Hot 97 radio station: ''I don't feel pressure because I know that when I commit, I really commit. Now it's just thrown around because it's so easy to breakup. ''And I'm just not that kind of person. I'm just not gonna do that. I wouldn't do that to her. That's just not how I was raised. I just don't feel like that would be honourable.''..