The first attack is gained by the student, and is called Master Class, its a medium damage AoE attack, which seems to trigger more the longer youre with your teacher, and your luck in love. The teacher also has a Master Class attack, but theirs is a high damage attack to only a single target nyaa. Finally, the student can sometimes trigger a buff called Gurus Guidance, which gives a +10 agi bonus at level 5, and lasts 20 seconds, this one is triggered off luck in love and the students hp level.
This is a fairly useful relationship to have cheap Runescape Gold. At level 5 it seems to have three abilities. First up is the Love Bomb attack, which is a medium damage AoE, triggered by time spent with lover and luck in love. Secondly, when on low HP, you can get the Refreshing Kiss, which will give your lover a maximum of +1000 hp back. Finally, if your lover should die, you can use the Kiss of Life to restore them to, well, life, with 800 hp.