Don't care what BF does anymore

Kiara • Hi! My name is Kiara.
I used to get sooooo upset when I saw if my boyfriend was doing something I didn't like such as talking to other girls (even if they are just friends) Now If I see him doing this stuff it doesn't bother me. I don't care if he's talking to other girls. I know that he only wants me, and cares about so I don't get mad/upset. Why is this? Am I not in love with him anymore or am I just starting to be more mature with everything?