Premieres in Japanese theaters February 14th (Crunchyroll says the 2nd, but all the other sources I looked up say the 14th). The new PV is here. Check out the Crunchyroll article for additional information. Synopsis for the source manga from AniList:

Can true love really overcome any obstacles? Saki, a high school student, confesses her feelings to Makoto. Taken aback, Makoto reveals his secret, but the sudden discovery doesn’t seem to bother Saki who is already head over heels for him. After being rejected, Saki asks Ryuji, Makoto’s childhood friend, for some advice on how to win his heart. A love triangle unfolds when Ryuji realizes that he might also have some feelings for his old friend.