How do I tell my mum about him?

Well first thing is how old you both are . Have you had a boyfriend before ,, or taken anyone home .. Have you ever given your parents reason to distrust you ? If all these things are OK ,, and you are of an age where it would be OK to have a boyfriend ,, Just tell mum and dad you have been talking to a guy you like ,, and have become friends ,, and you would like him to meet your folks , Tell them you might like to go out with him in the future but would value your parents advice . I think they might be interested in seeing and vetting a prospective friend of their daughters .. hopefully they will say He seems a nice chap and allow you to date him if that is what you wish . ,,