How to apologize to a guy i like? please answer...10 points (:?

so im 14 and theres this guy that i go to school with. we would text alot and he would respond quickly. he always complemented me and told me how pretty i was. and then he told me he liked me , and i like him so i told him. then recentally i graduated from that school and he told me that he would love to hangout with me in the summer.well now its summer and i text him saying “hey” about twice every week and i get no responce. then he said “sorry i havent been able to text i've been really busy latley”. then me and my friends thought it would be funny if we walked to his house and asked for some water. so we did and i feel bad about it, so i texted him saying i was sorry but he didnt respond. am i over reacting? or am i being clingy? what do i do??!!!!