I think a coworker likes my boyfriend?

My boyfriend and I work in the same place and he is a manager in another department. Only a few people know we are a couple. This new girl got hired a few weeks ago and I think she likes my boyfriend. Everyday when she is there, I come into his department to do something and I see her coming into his department looking exactly for him. I came into the break room a few times only to hear her talking about him to other coworkers. She's doing things like straightening his paperwork (without him asking), helping him with other work and following him around. She is a friendly girl but from my own eyes its mostly to my boyfriend. I don't know how my boyfriend feels about her but he openly tells me stuff (work related) he does with her. So its not like he's trying to hide her. She's so helpful and wifey material to him and it's scaring me because I think he might begin to find her more appealing. What do I do?
I think a coworker likes my boyfriend?
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