What does it mean when your boyfriend stops saying "I love you" but in person he is still affectionate? Also stops texting as much and calling?

Anonymous
So my boyfriend and I have been together 9 months now, we recently have had some pretty bad arguments/conflicts which ended up in us having a weeks break from each other (not seeing other people). He hasn't said " I love you " to me since before the break, which was about 2 weeks or so now.
When we are together he is still affectionate to me (although still doesn't say he loves me) - he ALWAYS used to say he loves me to me, when he said bye to be in person. We see each other 3 times a week. Now he has stopped txtn/calling me as much. He will go out at night and he will not text me while out, and only contact me the next day around lunch time or something.. he doesn't text me to say good night or anything.. he always used too. I feel like I don't exist sometimes.. He is still calling me babe though and sometimes puts "xx"'s.. Please help? Is he doing this cos before he felt smothered (he told me). I haven't been needy at all.. I only text when he txts me, and am not clingy at all.. I didn't even ask him questions about his night out (that he still has not mentioned anything about to me - who knows what he got up to).
What does it mean when your boyfriend stops saying "I love you" but in person he is still affectionate? Also stops texting as much and calling?
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