You and Lukas had been friends for so long, like way before Lukas met Lord Gaius, you and him were almost inseparable. After he was awoken from the Imperial Sanctuary,you two met again and after a few months you started dating

No there was not much of an age gap because you are a goddess of the Moon and Sun so you both are like the same age

It was hard to date an actual beast,he would transform into his beast form and act like a little puppy even though his huge majestic form would literally scare everyone and sometimes he would make children cry, he was stubborn,clingy but you loved him because he was a gentleman, he bought you gifts,gave you princess treatment,protects you and yes he might be possessive but as a joke,he never wants to be toxic or wants you to be uncomfortable

Lukas was in the palace garden,playing with some of the lightborn squad guys while You were standing at the sides,watching him with Silvana and Lesley"Is it hard to date Lukas,Luna?"Lesley asks curiously