Your parents already love you. Sometimes it's difficult to believe something like that but it's true. The real question is do you love yourself? A very wise person once said to me, "People are put into our lives to show us what we have to work on." This was said to me at a time when I was struggling with my relationship with my mother. I wondered for most of my life why she didn't love me. It turned out she always loved me but I couldn't see it. It wasn't until I was able to recognize in myself the things I didn't like about her that I started to see that I might be pushing her away. Today we are the best of friends.
Hopefully one day you and your parents will be closer. Take a look at what it is about you that you believe your parents don't love. Also look at what it is about them that bothers you. If you're brutally honest with yourself, you may find that you can make some changes in yourself that will help you to see that they do love you. You may also want to consider having a conversation with them about how you feel. Approach it from the standpoint of wanting to improve your relationship with them. If you start out by blaming them you've lost the battle before you start. Be willing to take responsibility for your actions, thoughts and words and see them as loving parents, even if you're not feeling the love. Time will heal and if you work at it, the healing will come faster. Good luck.