Not sexual misconduct but interesting sexual activity

[lotus flower]

So what i do is not sexual misconduct but an interesting sexual activity. I do not feel sexual desire toward adult peoples, i like their bodies but i do not feel sexual desire toward they. I have sexual desire toward a few objects and i have a "romantic relationship" with an object, i sleep with this object and i masturbation with this object... I love this object. Is there any problem? I practice meditation and my present goal is Stream entry, not Nibbana, because right now i can't let go my love toward this object.