TIFU when I (19m) missed all the signs that my roommate (22f) was interested in me

My roommate moved out this morning. She's immigrating. The two of us have shared an apartment for almost 2 years. I've always been attracted to her, but I didn't want to be that guy who tried to fuck the first female roommate he got, so I did my best to keep our relationship as platonic as possible. However, last night being the last night my roommate and I were gonna be roommates, I decided to tell her that I always thought she was attractive. I also made it clear that I didn't expect anything to happen, I just wanted to get it off my chest so we could laugh about it without worrying that it might be awkward the next day, and the day after that, etc. My roommate playfully punched me on my shoulder and said she gave me so many opportunities. I had no idea what she was talking about, which prompted her to provide the following examples:

1. When we were dancing in the club and the song finished, our faces were so close together, our foreheads were literally touching. But instead of kissing her at that moment, I apparently rolled my eyes to the back of my head and asked if I looked like Storm in X-Men.
2. When she asked me to show her what kind of porn I enjoyed watching, I showed her mine and she volunteered to show me hers. We were sitting on the couch, watching people fuck, and still I did nothing.
3. When I was hospitalized, she said she would be happy to nurse me when I get home, but only if I promised to wear nothing but my hospital gown.
4. When she asked me for a piggyback ride to her room when she was done showering and only wearing a towel.
5. When she confessed to sleeping in one of my shirts because I was away for the weekend and she wanted to feel close to me.

I can go on, it was a long list, but this was the top 5 for me. It seemed so obvious now, but at the time I was fucking clueless. I think I was too focused on NOT crossing that line that my brain completely blocked out any signs of sexual chemistry. My roommate and I laughed about it, but deep down I was so angry at myself for losing out on what could have been a more exciting experience because I was unable to connect the dots.

Tl:dr I was blind to the signs that my roommate was attracted to me, and now that I finally know what I've been missing out on, it's too late to do anything about it because my roommate is moving overseas.