Long Distance/When To Say I Love You

So my boyfriend and I have been dating just for about 5 months, and it became long distance when he left to live in a different state for an internship this semester (we are both in college). Ever since he visited me in February I have wanted to tell him that I love him, because I really do, like this man has me absolutely crazy for him. The only problem is the distance, we talk every day and it’s a great relationship, but I don’t know if telling him I love him over FaceTime or text is appropriate for the first time. Should I wait until I see him in the summer when he visits or just I just tell him how I feel? It’s literally all I can think about, and I want to tell him how I feel about him. What should I do?