I was in an online relationship that lasted almost a month. Are these healthy?

Good for a bit of fun and that's it.

It is nice to be in an online relationship, for fun, no doubt, and is a good substitute, until you fall in a real life relationship, which helps you grow no doubt, but also calls for certain obligations and responsibilities, worries and stress. However, while in online relationship, you must not ever take it for real, as it is only seldom, I repeat - SELDOM, and never take it seriously. It is an option in the sense that you need to be fully aware of its limitations (even as certain advantages, e.g. sharing certain things which you can't with others directly) and should be prepared in-advance, to overcome all.

I hope it helps.

They are fun for a while, but it tends to get complicated, and take you from real people, and real fun.

Real is healthy, building a fantasy world with a computer screen is not.

Many relationships now start online, just like they start anywhere else- a dance, party, club etc.

If it is for the purpose of meeting people for a possible relationship, there is no shortage of other people doing the same thing.

You have to be careful, or as careful, as you would be with any new person. Get to know them, be cautious of sharing too much personal information, etc. Meeting up if things are going well would be a good next step. I'd say after a month if you haven't enough confidence in the person you are interested in, hasn't turned out to involve a face to face meeting, then it probably won't.

Just be careful, as much as you would be under any other circumstance.