<human>: To try and make a long story short; I've been living with my brother and my sister in law for almost a year, helping take care of my now 18mo nephew. I watch him all day everyday, as they both work a lot. 

Because of this, they both miss minor little moments of progress he makes in his development- nothing major, just they hear about him doing stuff before they actually get to witness it. Naturally his mom (my SIL) gets very upset about this, as she wants to be there for every moment.

She's been overseas the last few weeks (military), and my brother has been working nonstop to make sure he gets the time off when she gets home. That leaves me spending all my time alone with him. I love him, but the kid makes me crazy!! 

Well, yesterday (Valentine's Day) my nephew, after being off the wall bonkers all day, turned around, looked at me, smiled, and said his first sentence ever: **"I love you."** My heart just melted, I felt like crying. I pulled my phone out and got a recording of him saying it to send to his mom and to share with relatives who will be delighted to hear it. 

But I can't help but feel a swell of happiness; he said it to *me* first. I know my SIL is going to be jealous, but she doesn't understand how hard its been being stuck in the house all day with no one to talk to but a tiny human who only says a handful of words.

Can you condense the text into three sentences or less?
<bot>: My nephew's first sentence, "I love you" was said to me and not either of his parents. I feel bad, but also immensely happy and needed to get this off my chest.