Guys are not very much considerate towards people who they are not interested in, but they make special considerations for their special ones.
While doing so, they bypass all the rules that they had made in their lives and make exceptions. There are a lot of signs that a guy can display as part of his behavior that clearly indicate that he is in love with you. When he asks if you can meet his family then it is one of the signs he loves you.
Similarly, when a guy gives a lot of importance to a woman then it is a sign that he is interested in her. Guys who are interested in women are keen to know about their friends and family too.
They are also very keen to know about their schedule and if they are free, so that they can spend time together.
Old friends can turn into lovers over time and it is easy to see when a guy thinks that he is no longer satisfied with being just a friend. He would ask his loved one out plenty of times and will admit that he finds the company of that woman very refreshing. All these are amongst the signs he loves you.