I know nothing about Philip Larkin. What can you tell me about him?
Philip was an amazing well known English poet and novelist. 
What are some of his famous works?
He has written many best sellers I read one in college A Girl in Winter it is a older book but one of many of his greatest poet collections. 
Oh that sounds beautiful! What was it about?
Like many of his books it was a more so passion and glum accuracy about emotions the irony of the book was great.
I love books of this nature. I will definitely check it out. I'm assuming he is deceased? Does he have any other popular works?
Yes he passed in 1985 another top poetry book is The less deceived I havn't actually read the full book but read parts of the text on E reader. 
These are great suggestions which I will most certainly try to find and read. Was he one of your favorites?
He is one of them I took literature in college so being his poetry was emotional and talked about relationships it caught my attention very much.