I feel a lot of confusion in this relationship.

He was the one who first showed interest in me and pursued me. He was very enthusiastic towards me before I fell in love with him. Aside from work(he) and study(me), we used to text and call each other frequently. Over time, I grew more attracted to him and eventually fell in love, wanting to be with him in real life.

However, he has grown increasingly distant since the beginning of this year. He used to reply to my text messages promptly, but now it always takes him several hours. It's even harder to have a phone call with him. I have to beg him repeatedly before he agrees. When I say "I love you", he doesn't respond to me directly. Instead, he just tells me to focus on my studies. I've suggested meeting in person many times. He doesn't refuse me directly, but he always avoids the topic by saying "in due time". I've tried to have deep conversations with him to understand his thoughts, but his responses have only made me more anxious.

I'm sorry that I'm not a native English speaker. Please forgive me if there are any inappropriate expressions.

(The chat screenshots are not consecutive. We've had very little normal communication recently, so most of the records are from moments when I was emotionally struggling.)