Answer:
dear (you friend's name),
my summer has been ever so boring compared to last years and the year before that, I haven't been able to meet up with any of my friends, i couldn't even see you for your birthday ; (. I hope you had a lovely day.
The weather has been alright here, but it was awfully hot for a week or so. How has the weather been down at your end? I couldn't sleep at night either, just kept tossing and turning in the heat, sweating, like a pig. Do you sleep alright? How have you been keeping, I am fairly well to be honest, I just cant cope with the lonliness and boredom though.
I am writing this letter to take my mind off of things and stop worrying about the coronavirus. School starts soon, cant wait to meet you!
lots of love from,
(your name)
