Idk what to do please help

so me and my Boyfriend are both in highschool without our drivers license, rn it's summer and we've been texting everyday. his parents are really strict and won't let us hang out even though we've been trying so hard to come up with a plan for us to hang out, they also took his phone away 2 months ago so he's been texting me on hos computer. he gets really upset when he leaves for a long time and feels really bad responding late although of course he can't always be at his computer. although today 4 hours went by with no response and I was alittle confused but I went onto the chat and it said he left the conversation 5 minutes ago. that means possibly his parents found out we were texting and if they did they will never let us see eachother again since our texts over the past few days have been very "sexual". if his parents don't let us text the next time we will see eachother is August when school starts. he is also my best friend and the person I'm closest with and I'm freaking out and need advice