魔女っこ de’GO♪GO♪～ポールとミラ☆クル大作戦～

Main character is a normal student with one special ability to see heart marks whenever situations can lead to love. After he confesses to a classmate with a heart mark, time stops and two girls jump out of the alternative dimension. They say that these dimensions are linked, and they need to supervise protagonist with the power to move love between the worlds.

[From vndbreview]