You may have just found a new training partner. A training partner will allow you to push yourself to new limits. It's also a good idea to have one for safety in certain sports such as hiking and weight training. If you're having difficulty finding a compatible partner, you may want to try a group that shares your interests in sports and fitness. The Internet will yield excellent results.
Several newspapers have a section just for fitness-minded people looking for an exercise partner.
When placing an ad for a training partner, be sure to describe your fitness or skill level as well as your time availability and goals. Many fitness centers will allow you to post a memo on their bulletin board that states your desire to find a training partner. This is very common with racquetball players who, as most athletes, feel the need to be consistently challenged by people of varied skill levels. You may want to look for someone who is a little better than you in your specific sport or activity. This will ensure you won't get a free ride and your progression will be much faster.