history: Before I got my dog, my life felt empty. He's my best friend now ! Before I got my dog_comma_ my life felt empty. He's my best friend now ! That's great! He sounds like a good addition in your life.
current: My life is now complete. He's so trustworthy and listens to everything I say to him lol. 
next: Awe I love my dog too, she's really sweet. Well except my dog doesn't listen, so I guess your dog beats mine, lol.