Love story gone wrong?

I have been talking with this guy for 2 months, we saw each other before I came to France in September to visit my aunt until January and in person he was a dream, I really liked him and we even ended up kissing, he present me to his mom, siblings and aunt and he literally stopped following every girl on his insta because he told me he wanted to do things right with me and he will wait for me to come back.

the point is that when I leave to France he leave to Phoenix, because he is practicing on a basketball team there and he wants to become a professional athlete.

now he is always busy, at the beginning we call each other for hours and now we barely even talk, some days he is cold and weird and some other days he is romantic so I didn’t like this behavior, I told him and what he says was that he is really busy and he has to focus on this because is really important for him, that he is not weird and that I have to stop feeling like I am the problem because I didn’t do anything bad.

So days passed and I am just focusing on me and when he texts me I reply but is not the same emotion than it was before, today he told me that he is going to San Diego because there is where his family lives, he told me that he loves me and blah blah I reply the same and in the night he sent me a picture with his cousin and I reply with a picture of some bread I was baking.

I didn’t have anything to do so I entered to his insta and put on following and I realized that he stopped following me and I don’t know why, we just follows a bunch of basketball players, his mom and brother but I don’t understand why he did that I don’t know if is because I upload a picture on my Insta with a male friend I met here, he things that something happen with him or he get tired of me and he just want to end the things that we don’t have yet? He told that I don’t have to feel that I am the problem but i can’t stop thinking about me doing something wrong.

What do you guys feel about this? I am overreacting?