Many people actually have problems distinguishing between love and infatuation. I sure did when I was younger.
An infatuation is when you stand next to someone and you get that weird feeling in your stomach. It's a nice feeling and some people confuse it with love. But really, it's just your heart pushing blood away from your stomach and towards your reproductive organs.
Love on the other hand isn't about that at all. It's something different all together. Whilst an infatuation on average lasts about 18 months (or so I've heard), love lasts forever.
I'm sorry about this Roger person. Let's pray for him, that he may understand that love knows no bounds and if God wills two people to be together, it's going to happen! It appears that he considers Richard to be a child. Most 19 year olds are adults. Perhaps still a little young and perhaps a bit naive, but most are capable of making adult decisions.