You will be surprised to discover that there's a close person who considers you something more than a simple acquaintance or friend. It may be someone from your group of friends or even one of your colleagues.
In any case, it seems that this role you play in the whole has ended by captivating that someone, who is very interested in you and in getting to know you better.
Wanting to help or being nice isn't synonymous of being willing to take that relationship to another level, so if you don't feel up for it, it will be better to leave your interests clear.
Your daily tasks can be too much for you in a day that is going to be very stressful. If at any given moment you must assume the responsibility of one of your co-workers or members of your team, you will do so without hesitating for a second and for the sake of the project, even if it means making a greater effort.
You will consider that the general result is better than solving your own interests and you will act accordingly. You can make everything go according to the plan marked, don't get discouraged.
You might have got used to certain situations that allow you to stay within your comfort zone, but the time has come to get out of it. Leaving that safe place where you take refuge will help you discover new possibilities and, consequently, break out of the monotony.
Maybe that site that you love so much isn't the right one and doesn't match too well with the personal moment which you find yourself in. If you have the mentality that any change can be positive, you will free yourself from that feeling of fear that comes out you when you think about facing certain aspects of your life.
A little excitement and adventure will make you feel much better.