The resemblance is uncanny

Imagine Alec teaching Magnus to use his bow and how intensely charged that entire scenario would be. Magnus would thoroughly love being wrapped up in Alec’s arms with his warm breath ghosting over his neck and earlobe as Alec whispers his instructions upon deaf ears…

Now imagine if the Alliance rune is ever used and how Magnus would also get extremely turned on teaching Alec how to control his magic? The sight of his magic running through Alec’s body igniting all of their joint nerve endings simultaneously. Alec’s determination in trying to keep his breath under control, never mind the incredible power that they now share. 

How Magnus would gently wrap his arms around Alec from behind, slowly guiding Alec’s hands in certain ways to make the spell they’re casting more powerful but at the same time, leaning into Alec’s exposed neck and peppering tiny, encouraging kisses as praise for handling it with such grace.