Starting strong, getting weaker

[Attacker]

Hey guys!
After observing some interactions and the way some couples met, I came to the conclusion social circle game must be the most effective way to get girls. In your group, you spend a lot of time together and no openers or false time constraints are required. Even when theres silence, you can turn around and speak to another member of the group!
I have been a very anti-social person for many years, but I decided to do something and join sports courses, a party and so on. Game has enormely helped me to boost my confidence and to initiate conversations by showing some DHVs. This helps, actually I feel alpha in many interactions. Problem is, after a strong beginning, I lose power during time! The first interaction is megastrong, next week people are turning to me and get interested, two weeks later I am part of the group and after two months I again have to open people in the group to get a discussion started. What is the real secret for staying alpha in your group throughout time?