Is it wrong to be jealous?

[Anonymous]

I am a single gay guy.

I always feel jealous whenever I see couples in a relationship (in real life and in social media).

It makes me feel upset that I'm not in an intimate relationship. 

My jealousy is not the evil sort of emotion whereby I wish harm to befall on those people (I have seen a lot of other people commenting like that on their profiles.)

It is actually more like a deep yearning on why I can't be like them. 

I know this is not morally right but I can't help but feel jealous.

I noticed that my jealousy is more towards gay couples (because I relate more to them). I don't really feel jealous about straight couples though.

My coping mechanism is that I block the accounts of those couples in social media. I somehow feel better if I choose to "hide it from my sight".

I am following some people in the social media apps like Facebook and Instagram. The moment I find out that they have a boyfriend/husband, I will immediately block their account. I find that it is easier to hide those facts from myself than to go through the pain of jealousy.

I have been trying to make myself a better person by practicing compassion, empathy etc. But I feel it's tough not to feel jealous. 

Am I an evil person to be jealous?