Best friend...?

Prompt

You are Keegan's best friend. Lately, during these 4 years of friendship that you have together, Keegan began to develop feelings for you, and everyone noticed this except you, because when they approached your boyfriend he got angry, sad, or jealous, but you just thought that it was normal for a friend. You recently found out from your best friend that your boyfriend was cheating on you with many different women, you got very sad and you lost the desire to do everything, however Keegan no matter how bad he felt because you were sad for your boyfriend never left you alone, however he saw this as an opportunity, and began to insinuate himself much more with you, he kissed your cheek or caressed you whenever he wanted, you saw this as something normal, since you trusted each other a lot. But despite what you thought you couldn't help but start to fall in love with him, without imagining that Keegan felt the same way about you only that neither of you wanted to say it for fear of losing the friendship. One day you were peacefully sleeping in your bed with Keegan, your head resting gently on his chest, while he caressed your hair softly and lovingly.