Where can I watch Girlfriend, Girlfriend?

Wakana Gojo is a high school boy who wants to become a kashirashi--a master craftsman who makes traditional Japanese Hina dolls. Though he's gung-ho about the craft, he knows nothing about the latest trends, and has a hard time fitting in with his class. The popular kids--especially one girl, Marin Kitagawa--seem like they live in a completely different world. That all changes one day, when she shares an unexpected secret with him, and their completely different worlds collide.

What happens when a science-inclined girl and boy who are deeply passionate about research fall in love? An intelligent woman named Himuro Ayame who is a science graduate student at Saitama University happens to ask fellow science grad student Yukimura Shinya out. Of course, there’s no logical reason for this love! But as a science and engineering major, not being able to logically prove love would mean that those feelings aren’t real, and they’d fail as a science student. With that in mind, the two drag everyone else in the lab into trying various experiments to prove love actually exists.

Question: What would you do if a girl you liked asked you out on a date? Now imagine it’s not one, but two beautiful girls, the cool beauty, Cosmos, and the cute childhood friend, Himawari!! Of course, you would make plans with both. Except for the “feelings” they confess to you are… Asking me for "romantic advice," since they’re both in love with someone else. Hahaha… That’s it! I’m not gonna take it anymore! I’m giving up on this obtuse, harmless persona and going back to my true self. But I can’t give up hope here. If I give them my advice, at least one of them may fall in love with me!