Considering how St. Francis basically had romances with inanimate objects, I don’t see anything wrong inherently with romantic friendships. David and Jonathan, Ruth and Naomi, as well as Basil and Gregory, had relationships like this, and this seems like what the Adelphopoiesis ritual is about.
We Catholics also recognize a thing called celibate marriage, which is the kind of relationship the Blessed Mother had with St. Joseph, or what Sts. Louis Martin and Marie-Azélie Guérin tried to do for a time, and what many Christian married couples in the past did in old age, deciding to become emuchs for the Kingdom after passing childbearing age.
I think the key is express your romantic feelings or “energy” in a way that is not sinful or might lead to sin down the road. I’ll say it again:
I think the key is express your romantic feelings or “energy” in a way that is not sinful or might lead to sin down the road.
If you think you can express your sexual energy, long-term, in a way that is not sinful and won’t leave you feeling empty and wanting to move towards homosexual behaviors, I don’t see any issues. This is important: if you view this as a sexual relationship without the sex, you will probably feel like the relationship is always incomplete in some way, and be tempted to move towards homosexual acts. The kind of relationship you want to aim for is one that is deep and intense emotional, a love that is fulfillingly expressed in a way that doesn’t involve sexual kissing, sexual touching, etc., or would eventually lead to these. You must not feel like the relationship is not complete without sexual activity, otherwise you are setting yourself up either to sin or be unfulfilled in the long term.
You might want to look into how priests, monks, and nuns channel their sexual energy in productive and fulfilling ways.
I also want you to think about how sexual relationships are fundementally unable to be shared with others, while chaste friendships can be, as well as how a married person can potentially have this kind of relationship with someone they are not married too.
You might also want to read and think about this:
beatushomo.blogspot.com/2013/02/chastity-part-four-friends.html
I want to finish with a reminder that these kind of bisexual feelings, especially for girls, tend to appear around puberty and tend to fade when a man becomes the object of your romantic and erotic feelings. Here’s an article about these kind of relationships:
en.m.wikipedia.org/wiki/Romantic_friendship
What’s interesting is that outside the West, these kinds of relationship are actually quite common, and that only Western people tend to view romantic feelings as necessarily coupled to and expressed in sexual acts (cough cough John Boswell cough cough

).
Christi pax.