Long distance relationship

Hi! I'm new here! My boyfriend lives in another country...We have liked eachother since our childhood. He moved from my country 4 years ago and we have met 2 times by then...

This time my mom made me a surpise and invited him 2 stay overnight for 2 weekends and he confessed after we had a date that he loves me...and I said that i love him back cause first of all he s my first bff and my first crush...After that we decided 2 get toghter...

We had our first kiss last sunday, but he left yesterday! I miss him sooo muchhh! How can I know that is this gonna work and How I m supposed 2 keep this going? I REALLY LOVE HIM AND I WAITED FOR THIS SINCE I WAS A CHILD!!!