<human>: Summarize the given text in a few sentences.

we have been together for almost 2 years. not living together though. he isn't overly sensitive but i don't wanna hurt him. i have been working out for over 3 weeks now and am seeing serious results already (Jillian Michaels body revolution: highly recommend). i love my boyfriend very much and want to encourage him to exercise so that he will look and feel as good as i do. he is very tall so he holds weight well but he is starting to get man boobs and a slight beer gut. and i am an arm girl and his arms are not scrawny but they aren't a turn on for me anymore like when we first got together. he is becoming more... i don't want to say unattractive but less healthy looking i guess to me since i have taken on a healthier lifestyle full on. any advice?
<bot>: i'm losing weight and becoming fit and don't know how to motivate my bf without hurting his ego. Advice?