WHAT DO I DO??!!!

So me and my boyfriend have been together for over a year and a half now and  we've had our ups and downs but we always stay strong and work through things no matter how difficult the situation is. There has been times when i have wanted to end the relationship with him but the good always trumps the bad and i've sucked it up and chose to stay with him for all his good qualities rather than leave him for his bad.

I recently started my new job about a month ago and have been getting really close with a guy at work. I've started to gain strong feelings for him and he has feelings for me too but he doesnt know that i have a boyfriend.

I am honestly stuck in a love triangle here because i don't want to lose my current boyfriend because i do love him, and with all we've been through it would be stupid to throw it all away, but on the other hand i really like this other guy and at times i feel like he makes me more happier than my boyfriend does.