Okay so my boyfriend is always hounding me to give him more blowjobs but I actually hate doing it. It's nothing against him I just dont like doing it and i tell him that and he gets upset and says " but i gives me pleasure and i do stuff for you all the time" and I do fell bad because he spoiles me with foreplay but i never return  the favor. usually my jaw just gets extremely sore from giving him head (because he always tries not to cum) so im sitting there blowing him for like half an hour! I dont know what to doo