In Jain dharma, the main concern is attachment, passion, and harm, not a special approval for one type of relationship over another.

For householders, Jain ethics emphasizes:

• fidelity within marriage,
• control of desires,
• non-violence,
• truthfulness,
• and restraint.

For ascetics, complete brahmacharya is required.

So Jainism does not say:

• “fidelity is okay for straight people but not for gay people.”

Rather, Jain teaching judges conduct by restraint, responsibility, and non-attachment. A committed relationship marked by loyalty and self-control is not treated as automatically worse simply because the two people are of the same gender.

At the same time, Jain dharma does not treat sensual attachment as spiritually ideal for anyone. The deeper goal is to reduce craving and attachment in all forms.

So the Jain perspective is:

• fidelity and restraint are virtuous for everyone,
• and lustful attachment is a bondage for everyone.

If you want, I can also explain how Jain texts discuss brahmacharya, grihastha dharma, and sexual restraint in a simple way.